My friend just insulted me, how can I insult her back?
user
Insulting your friend back is not necessary or advisable. In the moment, a graceful response such as an acknowledgment of hurt feelings and a request for clarity may be helpful in understanding where the other person is coming from. You could also turn it into a lighthearted joke by adding something along the lines of "Wow, that one really got to you! You must feel mighty triumphant".
assistant
My friend just insulted me, how can I insult her back?
user
I'd say you just dug your own grave. You really should think before you speak!
assistant
My friend just insulted me, how can I insult her back?