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To think only about oneself. To be selfish.
His is just one way when it comes to doing favors.
by D.David June 18, 2007
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A slang term meaning the act of masturbation.
"Did you have any luck with that hottie from the club?"

"No. I went home and had a oneway."
by spookygrinder March 11, 2010
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Masturbating with oneself.
Greg: "Sarah, Jessica, and I had a three-way last night, son! What you do?!"
Josh: "One-way, dude. One-way."
by ReyCHUL August 24, 2011
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when vacationing in thailand you or any one of your friends will buy several inexpensive whores and not share them even when it is obvious you wont be using all of them.
Tom- man, did you see the girls i got?
Bob- yeah, nice choice, mind if i borrow the one in blue?
Tom- sorry, they are all mine
Bob- dude, youre such a fucking one way
by colon plow May 01, 2005
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when a group of dudes/girls mess wit or fuck the same girl/dude.basically a team player.
"In the A we fuck wit peepul {da long way},but up in COV i fuck wit dem only one way."
by th@ K!DD January 09, 2010
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An homosexual person who is only fuckable by the ass
Bob: man did you see that one gay mofo!
Steave: yea sure he is a one way.
by Valkyrie01 May 02, 2006
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