bb is short for bottom bitch, or a butt buddy (someone you are so close with that its almost gay). This can only be achieved by very close friends.
bb by Fatniss Neverlean March 29, 2015
Get the bb mug.
Andy: wow look at BB Bradderz
Matt: God she has a large round arse
Haytham: I would so grab that BB with both hands.
Matt: God she has a large round arse
Haytham: I would so grab that BB with both hands.
BB by Very lazy garlic November 9, 2010
BB by Help me now July 17, 2017
{A big bitch}