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1.
a combination of the words retard and boce, a New York State term for a person of inferior academic ability who takes the short bus to B.O.C.E.S. for special ed classes; synonymous with botard
"Stop sniffing those markers, you rebo."
by nynaima January 19, 2005
 
2.
One that is Mentally Challenged. Short for Retard.
You look like a clown, Who the hell dressed you? Rebo!
by MsWorld March 18, 2004
 
3.
retard, idiot, slow person
God colleen murray your such a rebo!
by L Gonz February 06, 2008
 
4.
Adjective for Rear End Body Odor. You can not quite describe where a person's body odor is coming from...until you realize its butt-odor!
We knew she did not smell bad from armpit B.O., we realized it was coming from her Rebo.
by Jan.Kathy April 01, 2011
 
5.
A derrogatory term for a person who believes that they have been reborn, usually through accepting Jesus as their personal favor. Especially applies to those whose born again beliefs are extreme or ridiculous or whose behavior is annoying, for example campus evangelists who are former prostitutes who believe they have been 'revirginated' by Jesus.
I wish the rebos would stop tearing down the posters for our walpurgisnacht celebration.
by Dave Nalle December 11, 2007
 
6.
Adjective for Rear End Body Odor. You can not quit describe where a person's body odor is coming from...until you realize its butt-odor!
We knew she did not smell bad from armpit B.O., we realized it was coming from her Rebo.
by Jan.Kathy April 01, 2011
 
7.
Noun: Rear End Body Odor. You can not quite describe where a person's body odor is coming from...until you realize its butt-odor!
We knew she did not smell bad from armpit B.O., we realized it was rebo coming from her butt.
by Jane.Kathy April 01, 2011