A triple B is an alternative option to calling someone a "Baby Back Bitch". A baby back bitch is someone who is constantly whining and crying about things that are irrelavent and basically those people need to grow a set. A triple B is a shortened and comical way of reffering to these people.
How to use it:
"Your such a fucking triple B"
"You are the defenition of a triple B"
"Cheesey. Grow a set and stop being such a triple B"
"He wept when Bambi's mother died like a hardcore triple B"