a costanza
A Costanza is when you can't think of a good come back right away. You're too busy being mad or confused. You come up with it later, but it's too late and no one cares.
He said something stupid, but I didn't get back at him until the next day. He was already gone.
I waited till I got home to think of a good comeback. It was too late.
He insulted me, but I didn't say anything until the next morning. It was pointless.