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2 definitions by Reuben Wu

 
1.
To anally violate, or otherwise rectally penetrate, a medical student, often against their will.
Christ, I totally bum robbed him last night!
by Reuben Wu May 31, 2006
 
2.
To elude capture by sheer luck for a large period of time, usually for inappropriate sexual conduct.
I've been gibboing for six months now.
by Reuben Wu May 31, 2006