Your mother; used when one usually wants to insult you in the highest manner
I slept with yo mama last night. Your dad also wanted some, but IUNAFUKNKILLSOMPEOPLE was a homo, so he did your dad instead.
An individual (99.7% female) who is fantastically obese, unintelligable, or unappealing to one's vision. This individual may be large/stupid enough to believe that a Video Cassette Recorder (VCR) is a beeper.
Yo mama's so fat, she thoughtsic a quarterback was a refund.
When you drop the letters U and R from your, and apply the word son, then decide not to publish the definition, because apparently the word "boxxhenizeel" was so much better.
Josh: I defined yo son on urban dictionary
UD: NO SON YOU DIDNT! HAVE A BOXXHEINIZELL DAY!
Someone's father sexually mentally and physically
Who's yo daddy