Sandwich Comeback

Woman: What’s a good comeback for my sexist husband when he tells me to go make him a sandwich?

Husband: I know! How about you COMEBACK with a goddamn sandwich?

Explanation

The humor comes from the husband's response, which is a play on the word 'comeback'. Instead of a witty retort, he suggests she literally 'come back' with the sandwich, subverting the wife's expectation of a clever answer and highlighting his own sexism in a self-aware way.