look up any word, like the eiffel tower:
 
4.
NRB
No Reason Boner.......
Phil cracked an NRB in class.
by Mad Snake August 28, 2006
 
15.
An Acronym for No Reason Boner
I had a major N.R.B in Geometry.
by CJ McMastaKewlio February 09, 2009
 
16.
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
 
17.
Not Really But Still

When one says a phrase that is almost, but not quite, entirely incorrect.
I'm on fire!!!! NRBS, it's hot in here.
by Supuhstar August 01, 2009
 
18.
NRB
(pronounced "nerb") No reason boner
Dan had a huge NRB when he was in bio class while the professor was talking about meosis.
by Andy Kuy January 27, 2008
 
19.
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 13, 2013
 
20.
NRB
no reason boner!
when you get a woody, and there is no damn reason why
chris: it was prolly an NRB
me: its okay i understand
chris: it was prolly cuz u were there
me: oh fareal?!?!??!?!
by realrap October 11, 2007
 
21.
NRB
No Reason Boner that occurs in the worst time happening by the second
GUY 1: Dude I got the biggest bonner in the whole fucking world for no reason!

GUY 2: Thats called an NRB jackass and everyone in the classroom can notice!
by Axem Ranger June 13, 2008