It’s a joke that means your mama. And whoever roasted you with that joke must have given you seventh degree burns.
Person 1: hey have you heard from joe yet?
Person 2: who’s joe?
Person 1: JOE MAMA
Joe mama- you’re mama
It is meant for roasting your teacher in kahoot
Me: do you know joe?
You: joe who?
Me: joe mama
Over-used joke.
"Bro do you know Joe?"
"Whos joe?"
"JOE MAMA"
Do you know who joe is? -Guy 1 Joe who?-gay 2 Joe Mama - guy 1