when one has failed to shake off properly after emptying their bladder; a piss stain is left that soaks its way through to the trouser front leaving a circular stain.
" mate look over there your dads got a richy b!"
" she said it was the biggest she'd ever seen then got up and left. i couldn't believe it, i had a richy b the size of a golf ball."
" remember to always have an extra couple of shakes, don't wanna go around with a richy b."
The best male friend a girl can have.
known for being hilariously funny, and the best person to go to when yuor upset.
A richy poo will never leave you when your down.
Richy poo's are also known for having enormous penis'.
men are envious of richy poos.
A good example of a Richy Poo is the dude from my best friends wedding.
except he is gay.