And of course there's a poop reference.

Erwin's expression doesn't change at all. His eyes are soft and gentle, full of affection, as he keeps rubbing Levi's back.

"I know, I know." Erwin leans in and kisses Levi's forehead. "It's fine. I'm happy for you."

Happy, and a little sad. There has been the passing person who caught Erwin's fancy here, but they've been gone for a long time, and haven't returned. Erwin also knows that his own fancies are likely much grungier and hornier than Levi's; this whole thing seems awfully pure and sweet by comparison.

"Did you enjoy yourself?"