Work Text:
"This is ridiculous," Stiles said.
Derek pinched the bridge of his nose. "You've said that four times. Today."
"Because it is!" Stiles flailed. "Your sister and Lydia are marrying off their dogs. Their dogs, Derek."
"And we are going to go and support them because we are good friends."
Stiles rolled his head along the headrest of the seat, eyes sliding to Derek and going half-lidded. "Orrrr we could stay home and have lots of kinky, toe-curling sex instead of wasting this beautiful Saturday afternoon at a dog wedding."
Derek scowled. "If my sister wants to marry off her dog to her girlfriend's dog, then that's her choice. And like I said, I will support that like the good big brother I am."
"Aw," Stiles said fondly. "It's cute how you think she doesn't have you wrapped around her little finger."
Derek pulled the car into the Martin's driveway and parked, then turned to look fully at Stiles. "Look. They've been planning this for a long time. It's important to them, okay? Do you think you can keep from making any cracks for at least an hour? Just until we're done?"
Stiles snorted. "Do you really think Lydia and Cora will expect anything less from me?"
Derek raised one eyebrow. "You really think Lydia won't stab you with a stiletto if you do?"
Stiles frowned and sank down in his seat. "Okay, fine. I'll be good."
Derek sighed, and then slid his hand over Stiles's shoulder to his neck, rubbing his thumb along Stiles's hairline. "Look. You keep your snarky comments to yourself for the entire ceremony, and I'll rim you in the bathroom while they're taking pictures."
Stiles's eyes lit up. "Promise?"
"Cross my heart."
"You've got yourself a deal."