Top Definition
The act of fucking people on the side while in a horrible long distance relationship. Since people cannot cope with long distance relationships they need the additional sexual satisfaction of having sex with other people. The long distance partner cannot possibly satisfy the other through the use of phone or web sex, so additional partners are required to quench this desire.
D: So how's your boyfriend in Vancouver doing?
J: So fucking bad, thank god I'm sidefucking.
D: Oh I know what you mean, sidefucking is essential. Like when I was dating that chick in Utah.
by Tetherel November 07, 2010

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in the act of fucking ones partner from the left or right side with the armpit; with or without the use of anal beads; penetration optional; pleasure mandatory; herpes dependent; CAUTION: Extreme use of the side fuck may result in direct arm pit rash; also known as tube rash; in this case known as the side fuck rash
When I was done side fucking my girlfriend, I told that bitch to make a sandwich.
by Andy,& Pat August 18, 2007

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt