A way of pronouncing the number "four" or the word "for" in ebonics.
Porch Monkey1: I just threw some twenty fos on my candy painted lo.
Porch Monkey2: What kinda whip yall ass be ridin' dirty in?
Porch Monkey1: You know it gotta be a six fo!
These people are often shunned from gatherings that call for the exposure of their abnormal appendages such as swim meets, pedicure sessions and exclusive feet club.