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9.
When you go on a date with someone but fail to make it all the way to home base with them, say only second base, and then go home and reach home base by yourself.
guy 1- "How'd your date with Cindy go? Did she put out?"
guy 2- "No, we only got to second base but when I got home I got an R.B.I. by making it to home base by myself."
guy 1- "Aww dude, that's wrong!"
guy 2- "I know..."
by CRN November 06, 2008
 
1.
RBI
A game for the Nintendo Entertainment System created by Tengen. The most fun two player game of all time, especially if you want to get hammed.
Simanto: Yo man, I'm bored.
GWAR: Want to play some RBI?
Simanto: Dog, you know how to hit my g-spot
by Lord Gold December 29, 2007
 
2.
In baseball, R.B.I. is an acronym for "runs batted in". This occurs when a person who is up to bat successfully hits the ball and causes a player who was on one of the bases to score a run. The batter receives however many R.B.I.'s that there were players who scored runs. The batter does not always need to land safe on a base to score an R.B.I., so long as he isn't the cause of the third and final out of the inning.
The batter hit a ball deep into the outfield while there were two people on base, one on second and one on third. Both scored so the batter got 2 R.B.I.'s, but the batter himself got thrown out at third, causing the second out of the inning.
by magus35 August 04, 2007
 
3.
Randon Boner Incident
Oops I suddenly got a "R.B.I." when I saw that hot chick bend over.
by FeistySpnshFml November 11, 2010
 
4.
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.
by Daz Jenas December 17, 2009
 
5.
RBI
Really Bad Image.

This is what happens after TMI. Additionally, when you see something really horrible.
Tim: I just saw a dude eat a booger.
Tony: RBI, man.
by Evogq August 24, 2010
 
6.
RBI
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.
by klide-ax October 23, 2007
 
7.
RBI
Random Boner Incident.
Andy- "So, I talked to Sadie yesterday in math class."
Brad- "Did she give you a RBI? That girl is smoking hot!"
by HOG2331 September 07, 2010