v. To give someone the "sidewall". A sexual act where, when banging a chick from behind, the man turns his body to the side and rams the outer lining of the vaginal walls.
Give her the sidewall, dude! The sidewall! Yeah!
by Alana Riveras January 20, 2005
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A trail of shit left down the bowl of a toilet.

The Sidewalling game: Capturing a sidewalling with a picture and sending to all your mates. (more points awarded for the tail being close to the top rim. Points deducted for trails leading into the water)
Mike captured a fantastic bit of sidewalling art, After sending a pic to all his mate he received a respectable 9 out of 10.
by DogKRO March 13, 2010
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A booger that slides easily out from either inner nostril wall. It is approximately the size of a Kellogg's cornflake. The pinky finger is ideal for getting out most sidewallers.
It was so dry last night that I slid out a giant sidewaller with some blood residue this morning.
by cahunegacat January 8, 2013
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"Damn, that string bikini is showin' off her sidewalls!"
by Krazzzzzzy Kyle March 21, 2004
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A haircut with large bare areas over the ears. A Mormon haircut.
Heber went to the barber and got his white sidewalls trimmed again.
by Bumkicker Slade April 24, 2005
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The action of cleaning the inside of ones ass cheeks after experiencing anal seepage.
Example 1:
Dude I think i just sharted, I might need to go wipe the sidewalls.

Example 2:
You're going to have to wipe the sidewalls after that one.
by Nelson a.k.a. HairyCheeks December 17, 2007
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