Definitions by SnazzLem

N.R.B. 

No Reason Boner:
A spontaneous erection without any mental or physical stimulation.

"Dude, just as I answered the door I was hit by the N.R.B.!" "Woah that must bave been awkward bro dude man"

N.R.B. by SnazzLem January 22, 2013