For males it is playing with your wang or joystick on your crotch till you ejaculate white semen. For chicks it's the same except it's their vagina.
Try this: Master of debating(say it quickly and it sounds like masturbating)
Ex: Sarah: Hey what are you doing in the room? Kevin: Well I'm masturbating to porn so don't come in. Sarah: o_O Okay! talk to you later then.
by Mr.Craze February 18, 2009

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To perform an act of masturbation.
The village idiot was masturbating.
by Root January 20, 2003

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The worlds leading cause of blindness
Did you hear that masturbating makes you blind, its true
by Double D123 May 26, 2008

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The Urban Dictionary T-Shirt

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Having sex with your own hand or even using a fake dick (dildo) in the case of girls (or very messed up guys)... its very pathetic.
John is masturbating every night because he has no hope of ever having actual sex.
by CanHasHaxx February 05, 2009

The Urban Dictionary Mug

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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