Definitions by Daz Jenas

RBI 

Rectal Ball Insertion. When a guy manages to get his testicle into a girl's rectum. To this day, there are no reported cases of the RBI.

We were getting bored with our normal routine, so last month I decided to go for RBIs.

It really, really hurt my balls but I got them in there. I'm up to 5 RBIs this season.

RBI by Daz Jenas December 18, 2009