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12.
Acronym for Rough Unprotected Butt Sex
This airplane is running late. Do you want to find an airport storage room and have some RUBS?
by Buttaztic December 24, 2008
 
1.
RUB
An acronym for Rich Urban Biker. A title given to middle aged, upper class, white males that make more money than they know what to do with so they decided to pretend to be bad ass and get a Harley. Unlike real Harley men they get all the trimmings on their bike which usually includes Heated handle bars, luggage racks, stereos, raised back support, cruise control and completely useless items like suicide shifts. Basically they just end up buying a 2 wheeled sedan, but they have no idea how to maintain it.

You’ll never see them exceed the speed limit; actually, you’re lucky to see them ever DO the speed limit.

Any damage that may occur to their Harley will instantly run them at least $2000, merely because of all the bloated accessories they’ve placed on the bike, because of this, they will only take their bikes out on the sunniest of weekend rides and only for short distances. Even if they’re going to some sort of Harley riders get together, they would rather tow their bike in the back of their truck, stay at a nearby Hilton and will only ride their bike a couple of miles from the Hilton to the “meet” the day of the convention.

RUB’s are the only motorcyclist who DO NOT give a waive or a nod to other riders on the road when passing, apparently they are to smug to do so or afraid of crashing by doing something complicated like nodding.
only a RUB would have heated handlebars on a bike
by Mr Wall June 21, 2006
 
2.
RUB
To possess a Random Uncontrollable Boner.
I politely declined Ms. Smith's invitation to come up to the blackboard for I had a RUB.

Sitting next to the old lady playing bingo, suddenly I got a RUB. DAMN!
by Shagmaster D September 28, 2005
 
3.
rub
verb - sexual activity short of intercourse, often used to vaguely describe encounters.
-Dude, I saw you talking to that chick at the bar, did you hit that?
-No, I just rubbed on her.
by Salty Skillz March 21, 2006
 
4.
RUB
stands for "randomly unprovoked boner" Or when a guy gets hard for no apparent reason. Happens a lot in high school
"Dude I was in chemsitry class and got on of the biggest RUB's in my life."
by Tudou April 02, 2010
 
5.
A short-hand version of saying rubbish.
"man that film was so rubs"
by Alex H January 29, 2005
 
6.
RUB
The truth of the matter.
I saw eight of them. And that's the rub.
by r-ub October 29, 2003
 
7.
Rub
Welsh word for a sexual encounter without being obvious
Fancy a rub??

Did you have a rub last night?
by Welsh rogue April 23, 2013