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 4, 2003

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 6, 2008

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

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 2, 2006

N.R.B

An Acronym for No Reason Boner

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

by CJ McMastaKewlio February 9, 2009

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"

by SnazzLem January 22, 2013