After being the target of an insult or diss, the recipient is at a loss for words & has no comeback. On the way out of the building walking down the stairs they think of a great comeback they SHOULD have used.
Insulter: “You think you’re hot shit but you’re nothing but a smartass.”
Recipient: “err… I’m gonna leave now”
**on the way down the stairs**
Recipient thinks “Damn! I should have said that being a smartass is better than being a dumbass....
Grrr another opportunity lost with a stairway comeback"