Acronym standing for "Rock et Belles Oreilles", a legendary french-canadian comedy group active from the 1980s up to the mid-1990s.
Wow, ta joke est de qualité RBO.
di Edgar Pruviance 26 maggio 2009
1 more definition
Random Boner Occurance
I got an R.B.O. in the middle of class today!
di Michael Perkins 20 giugno 2006