An acronym for Random Instantaneous Boner. Meaning; when a male gets an erection out of no where and for no reason at all
I was watching grass grow and all of the sudden I got a R.I.B
I was driving in the car with my mom when to our surprise I sprung a monsterous R.I.B
I was driving in the car with my mom when to our surprise I sprung a monsterous R.I.B
by Bloodlesskills September 12, 2014