Derek pinning Stiles to the wall after one too many comments on his recent weight gain. Stiles is stunned to silence for once as his mind has gone completely blank from feeling Derek’s stomach envelop his torso entirely and pin him completely against the wall like a heated and very, very heavy weighted blanket.
Stiles' brain offers 2 useless thoughts. 1) He's gained more than I thought and 2) dear god I need him on top of me
So in the long, long pause it takes for him to come up with a thought, the best he has is "Okay, I'm sorry. I was wrong - you're clearly big enough for my 600lb Life. Need help with your application?"
That earns him another growl and the usual "Do you ever shut up, Stiles."
Which- no, he doesn't. He has a million comments on Derek's enormous weight gain. "How many people did you eat?" "Is this what happens to werewolves before they hibernate?" "Where do you even get jeans in that size?" "Were you trying to go running again? I thought I felt tremors."
But right, all he can focus on how close Derek is. On how much weight he has pressing against Stiles.
So Stiles, accepting it might be the last decision of his life, but wow would it be worth the risk - reaches both hands out, rests them on Derek's love handles, right where his shirt has started to rise up, and squeezes.
The growling in his ear stops. There's no fangs. Instead Derek pushes harder into him, like he's encouraging Stiles to continue.
Don't need to tell him twice. He starts kneading Derek's gut like dough. Grabbing at his back rolls, then tracing them to were they wrap around to the front of his bulbous belly. He's a little obsessed.
Gives Derek all of his thoughts while he's doing it. "There's so much of you now. I couldn't believe it when I came back and saw how fucking fat you were. You've gotten huge, Derek. Look at all this. Can't even get my arms around you, jesus, what happened? Were you trying to get this fat? Eat the bakery out of town or something?"
Derek just groans. Stiles ends up rutting against what he thought was Derek's thigh but, no, his gut just hangs down that low now. Derek is clearly doing the same but -
"Would you count this as masturbation? Since your dick is buried in that blubber...your fatpad must weight more than me. Can you even reach your dick anymore?"