He shouldn't have to worry about corny back talk when he's got his tongue in someone's mouth- but Felix is kind of a special guy. Gotta admire that. Less the sassback but it's not enough to have him peeling away. If anything it's fuel for the fire.

What he's got is a hand snaking down to pinch at Sam's nipple- not as bitingly sharp as the clamps but a good improvised alternative while he swaps from 'fuck yes now please' to 'fucking ruin Sam'. Rendering them incoherent will be a visceral delight.