Bucky can't help it but he laughs, a true laugh, and he doesn't think he's let himself be this unrestrained in...well, ever. Not since he's come back from being the Winter Soldier, anyway, but the idea of him being a needy little shit when he barely even allows himself the minimum standard of comfort necessary for civilized living is just laughable.

"I am not a needy little shit. I sleep on the fucking floor. A bed is for your sake, dame, not mine."

He appreciates the joke, the chance to let loose, and while he's still impossibly aroused at least he's having fun with it and when was the last time he ever had fun? 1943. It was 1943.