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1 definition by Glory Days Girl

 
1.
RBI
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"
by Glory Days Girl November 30, 2009