basically its yo momma but as a name
teacher:anyone absent?
student: yeah joes not here
teacher: whos joe?
student: JOE MOMMA B)
Joe Momma = Your Momma / Yo Momma
p1 "knock knock
p2 "whos there?"
p1 "Joe"
p2 "joe who?"
p1 "joe momma"
It is a type of joke people use to make a quick laugh.
Do you know what happened to Joe
Who's Joe?
Joe Momma