Repartee

/ˌrɛp.ɑːrˈtiː/ noun medium

Repartee is an exchange of sharp, humorous remarks traded back and forth between people in conversation.

The two comedians' rapid-fire repartee kept the audience laughing throughout the entire interview.

Memory Trick

Repartee sounds like 're-party' - think of witty banter bouncing back and forth like the liveliest part of a party.