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the back end of your body i.e. booty, ass, rump, butt, etc.. etc.. etc..
Ooohh that girls got a nice backside.
by unknown January 20, 2003
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Jul 28 Word of the Day
to sport a boner, fly the sail at full mass, rock hard, etc.
"I had a lot of cartoon characters that used to get me sexually aroused as a kid... The female reindeer from the Rudolph claymation series, when I was in preschool, I used to be bricked up watching that shit." -Jack Harlow
by real_philly February 11, 2020
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Backside is the word used to describe when a guy has permission to enter in the alternative option. In general, all guys like to go up the backside but it's a true honor and gift.
Me: I've been dating Joe for six months, and I finally gave him a season pass to go up the backside.
Friend: Shit really? You must love this guy. Oww
by Funny Moms August 08, 2016
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skatebaord terminology - to turn, more specifically, in the direction where after 90 degrees of spinning you are facing backwards, hence, backside.

also refers to the direction you are facing when approaching an obstacle. for example, if you roll up to a curb and it's behind you, any grind that you do on the curb without 180ing into it will be backside (including noseslides and boardslides...)
bs 180 ollies are fun, espesially if you do a sort of 45 to late 135.. its cool.
by karl July 10, 2004
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Hey, I banged that chick and got a blow job on the backside.
by C.J. Thomas November 03, 2007
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dairy-air, as in:
i'll put a whuppun 2 ur backside, yah crackuh!
by DCPimp August 24, 2003
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