I was a bit confused on how to rate this... because I love yo mama jokes, so that would be a 5. But it's yo mama.. she's poor, fat, ugly and stupid.. so that would be a -5.
Yo mama jokes are simple... Start off with "Yo mama is" then an adjective like stupid, fat, ugly, poor, etc... and continue on.
Here are some of my favorites:
Yo mama so fat, that when she jumped for joy, she got stuck. Yo mama so stupid, she stared at a box of orange juice because it said "concentrate". Yo mama so stupid, she asked me what "Yield" means. When I said, "slow down", she said, "What..... does.... yield...mean?" Yo mama so ugly, she makes blind kids cry.
A Mother Insult (also referred to as a Yo Mamma Joke) is a reference to a person's mother through the use of phrases such as "your mother" or other regional variants, frequently used to insult the target by way of his or her mother. Used as an insult, "your mother..." preys on widespread sentiments of filial piety, making the insult particularly and globally offensive. "Your mother" can be combined with most types of insults, although suggestions of promiscuity are particularly common. Insults based on obesity, incest, age, race, poverty, poor hygiene, unattractiveness, or stupidity may also be used. Compared to other types of insults, "your mother" insults are especially likely to incite violence. Slang variants such as "yo mama", "yo momma", "yer ma", "your mum" or "your mom" are sometimes used, depending on the local dialect. Insults involving "your mother" are commonly used when playing the dozens. Additionally, this phrase is frequently used in playful banter between friends.
Although the phrase has a long history of including a description portion (such as the old, mostly harmless insult "your mother wears combat boots"), the phrase "yo mama" by itself, without any qualifiers, has become commonly used as an all-purpose insult or an expression of defiance. The insult may fall flat if it is true and should be used with ...