bonebreaking 

A style of dance, mostly infused with arm contortion. Made possible with arm/shoulder stretches & flexibility of shoulders.

Nigga 1: "Ah fuck! That nigga's arm bends hella weird! What kind of shit is that?"

Nigga 2: "Don't worry, he's fine. That's that raw bonebreaking shit."

bonebreaking by yungthuglyfe November 11, 2013

Bonerbreaking 

The act of surprising two people who are having sex when the man is about to ejaculate. Thus breaking the mood, and his boner.

Person 1: Oh dude, Jake just walking in right when I was about to cum, he totally broke my boner.
Person 2: He's a pro at bonerbreaking.

Bonerbreaking by Nightmare-kid October 22, 2010

boxbreaking 

An act of (typically) lesbian sex. See fisting.

Also see boxbreakin.

Did you see those dykes going at it?

Yeah, they were totally boxbreaking!

boxbreaking by Captain Beefheart December 13, 2004