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1.
masturbate. literally, rub until you orgasm.

also known as "rub it out"
Damn, that made me really horny. I'm gonna have to go rub one out.
by Noelle March 14, 2003
 
2.
A sneaky way of saying masurbation.
Hey man, we're gonna head down to the gym and shoot some hoops. Wanna come?

Nah, I'm kinda tired, I'm gonna go rub one out and take a nap.
by Unfairman January 10, 2004
 
3.
The act of male masterbation and orgasm prior to going on a date where it is apparent he will score. The male performs this act up to an hour prior to the date in order to facilitate a longer lasting erection (thus satisfying her every need later on)
Bill knew Sally wanted to bone that night, so he rubbed one out in the bathroom before he left to pick her up for dinner
by Douglas PerfectHour February 22, 2005
 
4.
masturbate. The "one" is an orgasm, i.e. rubbing one's genitals to the point of climax. May also refer to a handjob or fingerbang, or more generally, any manual manipulation of genitals.
I got so excited watching her video that I had to rub one out.
by Scarey December 07, 2009
 
5.
To Masturbate;To rub till u get an orgasm
You are the one .. I think about.. when I rub one out..Rub one out.
by Sexii Panda June 23, 2009
 
6.
when you just really gotta come, so you make yourself. wether it's via vibe, hand, or any gadjet for that matter
Man, I was so stressed out, I relax after I rub one out
by notafanof100lbs October 03, 2008
 
7.
The act of rubbing one's sperm out in a easy flowing consistent motion.
Bubba: " Yeah gotta go home, put on my purple nikes, get my smokes, rub one out, shave my pubes, && bum a ride."
by Puddin0987654 September 09, 2010