Top Definition
The act of masturbation
I'm going to go have myself a onesome
by Etan September 05, 2003

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masturbation; sex with yourself
I bought a new porno and had a hell of a onesome last night!
by burntham September 05, 2003

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An awesome and alternate name for masterbation, jacking off, or pleasuring yourself.
Riley: "What's Erik doing in the corner?"

Aubrey: "He's having a one-some with himself."
by Aubsy October 17, 2010

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masturbation
Man, a threesome is way better than a onesome.
by chasebiaotch March 30, 2010

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a words that stupid people use to mean one on one sexual intercourse, but it actually means to have a wank.
downy: there's a threesome going on in that tent, and a onesome going on over there.

bretherin: what? u mean someones having a wank?
by braaphead November 03, 2006

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another name for masterbation
by thenumberonebitch September 04, 2003

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I would assume this means masturbation.
Many people fantasize about a threesome but all they're gettin is a onesome
by b-town September 06, 2003

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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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Buy the t-shirt