n.r.b

1.no reason boner
2.unexplainable boner

dude i got an n.r.b. in science.

by joe mackdonald April 22, 2006

N.R.B.

No Reason Boner, getting an erectefied penis for no specific reason.

"dude, yesterday in math class I got a huge N.R.B. out of nowhere.

by Lorenzo October 12, 2004

N.R.B.

No reason Boner. A hard on achieved with no apparent explanation.

I got a N.R.B. this morning at church.
I got a N.R.B. right in the middle of Schindler's List.

by B.O.B. April 04, 2003

N.R.B

N.R.B is an abbreviation for what is known as a "No Reason Boner".A No Reason Boner is when a male randomly "gets hard" for no apparent reason.Also see boner.

Man I have a wicked N.R.B right now.

by rundmc March 02, 2006

N.R.B

An Acronym for No Reason Boner

I had a major N.R.B in Geometry.

by CJ McMastaKewlio February 09, 2009

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.

by John Dennis Riley February 06, 2008

N.R.B.

Pronounced:(nerb) Its an acronym for no reason boner.

Guy 1: Why arent you getting up?
Guy2: I have a N.R.B.

by ImBeatenFrequently May 10, 2018