Every fucking time that I’m making a gifset and I see this scene again, the only thing I can think is Derek and Stiles bickering about who has the bigger penis.
Like Derek being all cocky about packing nine inches and Stiles like “ I don’t believe you dude, let’s wip it out and see who is bigger"
My headcanon? Derek is thicker Stiles is longer. Both of them are very surprised and happy about it, Derek even more because he is a size queen.
Sadly Peter and Scott aren’t.