A fork of Rural Dictionary
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.
When your friend is having trouble getting up to and beyond third base with a somebody, but you do or say something so that they end up having intercourse.
Charlie was having trouble getting to home plate with his girlfriend, but I earned an RBI by getting them both drunk and alone at that party where they finally had sex. Lisa wanted to have sex with Gary but he was clueless, so I set them up and they went all the way, earning me an RBI. I earned an RBI when that guy came over and asked me if I had a spare condom so he could make love to his lady for the first time.
Andy- "So, I talked to Sadie yesterday in math class." Brad- "Did she give you a RBI? That girl is smoking hot!"
Random Bar Injury Injury most likely sustained the previous night at a bar, but you were too intoxicated to remember the incident.
waking up in the morning - "where'd that bruise on your face come from?" "OH, that, must be a RBI" or "man my leg hurts, must have gotten a RBI last night"
Stands for Roast Beef Insertion. It indicates any type of penetration or sexual act. Also: Baseball. Runs Batted In.
-Ayo, you see Trina? -Did I see her? I musta got like 4 RBI last night!