A phrase so catastrophically devastating that any person who is willing to mutter these words in an argument will immediately win due to the enemy simultaneously combusting into flames
Phil:hi Dave did you sleep with my sister last night?
Dave:yo mama
Phil:*dies
yo mama so fat when she sit on your phone it become a ipad
yo mama to dum she trid to clime mountain dew
yo mama is often used for jokes to laugh at
Dude: ur fucking fat
You: yo mama fatter
Dude: *beats u up*
A reply to something stated against you, or you're bored and say it for no reason. The meaning lies in the word itself.
Yo mama fat it flattened my thighs while sitting on me. (I used it because Yo Mama is an animal)
Yo Mama is a term that can also be written as "Your Mom". Followed by these words are usually rude adjectives/jokes to describe one's mother. But, some may choose to refer to your mother as fine or a milf by using sexual references instead of hurtful words.
Your Friend: Yo Mama so hairy when she gave birth to you, you had RUG BURNS
You: Wow man that's kinda rude
Your Friend: Sorry dude, it's just a joke