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No Reason Boner; an erection that pops up outta nowhere.
spoken as: en are bee, or nerb.
"Yeah man, the cop wanted me to get outta the car, but i had an N R B so i just took the heat."
"We broke up (other dude: "why man?"), got a fucking N R B at her grammas funeral."
"If i dont stop gettin nerbs i gonna cut the fucking thing off!!"
n r b by 6IXTY 1NE July 25, 2006
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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.
N.R.B. by Lorenzo October 12, 2004
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.
N.R.B. by B.O.B. April 4, 2003
1.no reason boner
2.unexplainable boner
dude i got an n.r.b. in science.
n.r.b by joe mackdonald April 22, 2006
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.
N.R.B by rundmc March 2, 2006
An Acronym for No Reason Boner
I had a major N.R.B in Geometry.
N.R.B by CJ McMastaKewlio February 9, 2009
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
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