Yo Mama is a reference to yo mama jokes meaning when you say yo mama that means you think their mom is ugly fat or stupid
hey look its Yo Mama.
Your baby mama is when you accidentally get a woman pregnant-- oopsie daisy-- but you two aren't together. If a pregnancy is the result of a one-night-stand, she's your baby mama and you are her baby daddy. Sometimes you two can agree to raise the child as single parents, but in cases like How I Met Your Mother (Barney's mom), the baby mama will raise the kid on her own.
Anyone: Wait, who's Delilah?
Me: she's my baby mama.
A sexy hot woman who also happens to be a mother.
Me and my trophy mama went dancing last night .
Joe mama is a joke usually performed my middle schoolers, the joke will most likely start of with a conversation with two people, a random person will come up an ask you the question "whose Joe". Most likely the people in the conversation will yell "JOE MAMA"
Person: "whose Joe"?
Immature kid in class: "JOE MAMA".
it awesome
someone says"ur dumb!" and you say "JOE MAMA!!"