Derek innocently meant he’d give Stiles his heart in its place, because yeah, he’s totally gone on him, too. Stiles was found guilty of raging hormones and inability to let his boyfriend finish his sentences.
His punishment? Watching Derek strut around in his brand new Deputy uniform, the shiny pair of handcuffs mocking him for several weeks before both finally caved and utilized them for purposes that were indeed deviant.
Stiles later found Derek guilty of knowing exactly what he was saying, the innuendo-loving asshole of his heart.