1 - 20 of 2,030 Bookmarked Items in Ecto-Penis (Undertale)
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- Words:
- 238,519
- Works:
- 4
- Bookmarks:
- 24
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One-shot Collections
MsMK - UndertaleA variety of oneshots for the Undertale AUs, primarily focusing on Underfell, Underswap and Classic, but including others. Fantastic author, I love their Fell boys, solid Swap characterizations too, a very fun collection.
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Reader inserts by CosmicBrowniez (Shatterflowerdemon), Shatterflowerdemon
Fandom: Among Us (Video Game), Five Nights at Freddy's, IT (Movies - Muschietti), IT - Stephen King, Undertale (Video Game), Your Boyfriend (Visual Novel), どうぶつの森 | Animal Crossing Series, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
13 Nov 2024
- Words:
- 263,331
- Works:
- 73
- Bookmarks:
- 28
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Summary
When you board a plane to get away from your problems, you didn’t expect it to bring more.
Getting stranded on a desert island was not the kind of vacation you wanted.
Wait, isn’t this island supposed to be deserted?
Why are there so many skeletons?!
And why are they behaving so strangely?
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12
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Summary
The first part is focused on the dynamic between Cross and Dream, being in love with each other and helping people in the universe. The ending half is porn. Dream is on top, Cross is happy to be on the bottom, exploring feelings he thought were too taboo to share.
Series
- Part 1 of Smutty Oneshots
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Yellow Like Sunflowers by Hellsaint7w7
Summary:
The first part is focused on the dynamic between Cross and Dream, being in love with each other and helping people in the universe. The ending half is porn. Dream is on top, Cross is happy to be on the bottom, exploring feelings he thought were too taboo to share.
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Summary
An unbearable heat became a nuisance with Error's objectives and someone must help him to deal with it.
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would goon if I wasn't on my period
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Ngl I have read this before and I actually searched through a multitude of filtering patterns to find it, great work lmao
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Summary
Missions are almost always demanding. Dust almost always comes back mentally exhausted and covered in remains. So, he seeks you out for comfort and relief. What happens when he finds you sleeping?
Series
- Part 4 of please get these fuckers outta my head
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Bookmark Notes:
Noice
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Summary
"Alex is this bad-ass motherfucker who totally does NOT have her shit together. She's snarky, kind of a bitch, and drinks a bit too much and ends up contemplating the thought of boning the small skeleton. Stuff goes down. You will laugh, cry and likely throw your fic-reading device of choice across the room. Enjoy!"
Smut Chapters are marked with * and the actual smut scene in the chapter is always skippable!Series
- Part 1 of Spitfire
- Language:
- English
- Words:
- 168,194
- Chapters:
- 77/77
- Comments:
- 2,254
- Kudos:
- 1,526
- Bookmarks:
- 222
- Hits:
- 40,604
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Summary
You are the lead singer of Mili, an up and coming band you formed with your long time friends. You’re finally at your next chance at a record deal when you’re once again turned down. Desperate for help, your manager cashes in for a favor and enlists Mettaton’s aid. With a single signature you’re thrust into the world of monsters.
Now you’re being taught to dance by a prima donna robot with an unexpected and freshly internet famous dance partner: The tall, handsome, and destructively talented Desperado who starred in the internet’s newest viral video. While your life has altered significantly with your new role in Mettaton’s dance routine, Papyrus is a beacon of sunshine that keeps your spirits up. The two of you click instantly, and you become fast friends…
If only his older brother felt the same.
- Language:
- English
- Words:
- 378,679
- Chapters:
- 34/?
- Comments:
- 1,030
- Kudos:
- 1,117
- Bookmarks:
- 253
- Hits:
- 35,612
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Summary
Vanessa still wants her, Amelia can tell that much.
She’s always been the type to stare. Even when they were kids— Vanessa’s eyes would catch on Amelia’s lips one too many times during a conversation and her cheeks always, always had this beautiful flush to them in those moments. By the time they were teenagers, Vanessa would just lean in and steal a kiss, as was her right.
It’s different now.
- Language:
- English
- Words:
- 6,417
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 4
- Kudos:
- 46
- Bookmarks:
- 5
- Hits:
- 1,319
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Summary
You, an unstable bipolar bitch who can't hold a relationship or job, run into a box full of 3 1/2 little bittybones. You have your work cut out for you, will you end of rehabilitation these little dudes or will you be just as bad as their previous owner?
Heads up so you don't waste your time waiting to find out-
- Reader tops/doms 100% of the time
- Reader does not maliciously abuse the bitties, accidents just happen
- Kinda starts sexual at the very beginning, and this will be mainly kinky stuff
- Piss stuff but only for humiliation, no weird consumption of it
- MPreg -
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Summary
It all started with a dream.
Now Sans can't get Papyrus out of his head. -
That Time Blue Boned The Destroyer of Worlds by Mochimunchies
Fandom: Undertale (Video Game)
22 Dec 2024
Summary
Blue thought he had a pretty magnificent life. He had the bestest ever friends in Dream and Ink (even if the two sometimes still needed some guidance as to how living with mortals work), an amazing brother who he loved and respected very much (even when Honey could still be silly about a few things), and best of all, a datemate whom he loved very, very, very much..! Even if they had to be discreet about their relationship.
At least, until one night of passion and poorly managed intent had left them with something that they couldn't be discreet with.
As he prepares to take responsibility for his actions and dedicate himself to a domestic life with his beloved mate-to-be, Blue is faced with only one question:
How does he break it to his friends and family that he knocked up the Destroyer of Worlds?
- Words:
- 28,419
- Works:
- 6
- Bookmarks:
- 63
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Bookmark Notes:
Undertale
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What Happens in Space Vegas (Never) Stays in Space Vegas by Acoustic_Meatus
Fandoms: Undertale (Video Game)
28 Sep 2025
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Summary
Sans and Red's semi-annual weekend bender in Space Vegas takes an unexpected turn.
Or, the boys wake up in the aftermath of a hasty Space Vegas Wedding and consistently fail to make any wise decisions.
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Bookmark Notes:
f
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2023 Kinktober, but idfk what I'm doing by orphan_account
Fandoms: Undertale (Video Game)
06 Oct 2023
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Summary
Used Kinktober 2023 Prompts
1.) Macro/Micro,
2.) Titfucking
3.) Boot Worship, Hate Sex,
4.) Prostitution,
5.) Collaring,
6.) Chastity, Frottage,
7.) Stuck in a wall,
8.) Breeding,
9.) Glory Hole,
10.) Netorare, Praise,
11.) Petplay, Humiliation,
12.) Costumes, Medical Play,
13.) Size Difference,
14.) Selfcest, Orgasm Denial,
15.) Temperature Play,
16.) Gags,
17.) Three(or more)some,
18.) Olfactophilia, Spanking,
19.) Exhibitionism, Uniforms,
20.) Food Play,
21.) Lingerie, Tentacles,
22.) Bondage,
23.) Collaring, Facesitting,
24.) Sex Toys, Crossdressing,
25.) *SKIPPED*
26.) Masturbation, Overstimulation,
27.) Double Penetration,
28.) Body Worship, Cock Bulge,
29.) Breath Play,
30.) Overstimulation,
31.) Free Day -
and still you don't stop by orphan_account for sweethoneybear
Fandoms: Undertale (Video Game)
12 Jun 2025
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Summary
You don't even know how you ended up on your knees this fast. One moment Sans was making lazy conversation, half-lidded sockets fixed on you like you were the punchline to a joke he hadn't finished telling—and the next, he had you between his legs, cupping your cheek with one hand and tilting your face up with a touch far too gentle for how dark his grin had gotten.
"heh. guess you do like keeping your mouth busy, huh?"
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Summary
You are a passionate artist who’s struggling with sketching the pelvic bone, lucky for you, Edge is more than willing to give you some help and… his virginity?
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Bewitched, Bothered, and Bewildered by CrimsonAndCloverOverAndOver
Fandoms: Undertale (Video Game), Mafiafell - Fandom
15 Dec 2025
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Summary
Cherry Sweet is a rather unconventional performer at a club like 'The Velvet Crop' with her thick thighs and plush stomach, but she does well enough for herself. The patrons enjoy a bit of variety, but what will she do when she attracts the attention of a monster--and a mob boss monster at that?
Featuring a 1920's vibe with music from the 20's-60's, a meet-not-so-cute developing into a partnership, and a spitfire, plus-sized FMC. I hope you all enjoy!
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- Words:
- 72,785
- Works:
- 1
- Bookmarks:
- 45
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Summary
Papyrus is hankering for a smoke after his brother decides to force his hand in helping him quit smoking. Little did he realize that snooping around in Sans room would get himself into a fine pickle.
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- Words:
- 8,023
- Works:
- 4
- Bookmarks:
- 15