Amy doing her hair in the bathroom mirror:
She: “I’m binding my hair.”
Me: “Why don’t you bind your feet while you’re at it?”
She: “Why don’t you bind your mouth while you’re at it?”
We have this kind of exchange all the time. Simple inversion humor in funny voices. I dunno, maybe it reads wrong on the page, but in real life, these are the gems of daily conversation that keep our relationship continuously surprising, entertaining. It’s all in love.