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1. A Prime Problem by ChipperShipper9000

   Fandoms: Transformers - All Media Types  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Complete Work

   21 Oct 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Megatron/Optimus Prime
   • Megatron (Transformers)
   • Optimus Prime
   • Kinktober
   • Kinktober 2026
   • Transformers Kinktober 2026
   • One Night Stands
   • Mech Preg (Transformers)
   • Banter
   • Anonymous Sex
   • Implied/Referenced Sex
   • Non-Explicit Sex
   • Unplanned Pregnancy
   • Some Humor
   • Complicated Feelings
   • Developing Relationship
   • Mentioned Ratchet (Transformers)
   • Mentioned Soundwave (Transformers)
   • Blink n you'll miss it mentions
   • Tags Are Hard
   • Continuity Soup (Transformers)
   • Top Optimus Prime
   • Bottom Megatron (Transformers)
   • Top Optimus Prime/Bottom Megatron
   • Carrier Megatron (Transformers)
   • Sire Optimus Prime
   • No Beta I Am My Own Beta

   Summary

   Optimus has a one night stand. It’ll probably be his last one.

   Day 20 Prompts Used
   Kinktober: One Night Stand

   TF Kinktober: Mechpreg

   Series

   • Part 20 of OpMeg (with a side of PaxD) for (TF) Kinktober 2026

   Language:

   English

   Words:

   2,107

   Chapters:

   1/1

   Collections:

   2

   Comments:

   1

   Kudos:

   84

   Bookmarks:

   8

   Hits:

   646