Definitions by John Dennis Riley

N.R.B. 

Acronym for No Reason Boner. A random boner a guy gets for no apparent reason.

Zach; Did you see Evan got an N.R.B. in school today when he was akes to solve the problem on the board.

Ray; Yeah. How embarassing.

N.R.B. by John Dennis Riley February 6, 2008