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1. NRB
Short for "No Reason Boner." Generally, an erection that has no inherent cause other than a young man's hormones going crazy. The term is usually used to clear sexual tension when other prepubescent boys notice a bulge originating in your crotch area.
"For Christ's sake Dave."

"heh heh...::nervous laughter:: talk about a NRB. I sure hope the 10th graders don't see me."
2. NRB
No Reason Boner
I was sitting in class when I got a huge NRB.
by Joey Feb 26, 2003 add a video
3. NRB
Noun. NRB ( No Reason Boner)
This is what all male humans experience spontaneously, occuring from the early ages of adolesence to even in some rare cases senilty. NRB can attack men unkowningly, silently, and suddenly causing possible embarassing situations or even discomfort.
Zach was wearing basketball shorts walking to third period when he suddenly got an NRB and caused laughter and jeering from students around him.
4. NRB
No Reason Boner.......
Phil cracked an NRB in class.
5. NRB
NRB stands for No Reason Boner. Obviously, it's a boner you get for no apparent reason. It can happen at any moment in time.
I was walking to the front of the classroom when ... SHIT! I got an NRB
6. Nrb
n. pronounced (nerb)
Acronym (No, Reason, Boner)
when you are sporting a wood and there aint a reason to be aroused.

(George) "Hey guys, dont look now, but I like so totaly got a Nrb right now"

(Guys) "dude, thats sick, we are in the locker room"
7. NRB
NRB. (no rae bang) karaoke in korean.
kim: "heyy wanna go to nrb later?"
park: "ok! lets sing super junior and dbsk ;D"
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