a gurl you don't go out with but you still fuck her in the ass.
Do you have a butt buddy?
Friends who share the same butt.
"dude, look. they share a butt. they must be butt buddies"
Two guys who are really great friends, somewhat in a bromance yet certainly not gay. Often seen together at social events and other times.
you and your best friend are butt buddies
To mail lifetime companions, Who are both painters, Who argue over sports such as football and bowling, Who work way too little for very few hours each day, Who are often very big in the gaming community, Who enjoy 420 breaks, Andar a cross between modern-day Bill and Ted and Cheech And Chong.
Some call Rick and Terry butt buddies others call them lifemates.
Ridley Rick thinks baseballs harder and bowling that's what makes him a butt buddy