A number 3: a used term, when going to the bathroom. Specifically, going into the bathroom to masturbate.
Henry is taking a number 1, Becky is taking a number 2, and Jack... Is taking a number 3.
by Oweenie Bang Gweenie July 12, 2019
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Comes from the childrens nursery rhyme:

Number 1, tickle my bum
Number 2, do a big poo
Number 3, go for a wee
by Kellygirl February 11, 2012
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Rhyming slang for doing a pee or wee (urinate)

In the same way number 2 is rhyming slang for poo.
Had too much to drink, gotta go number 3.
by Jazpur September 04, 2011
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The act of taking a shit in a bidet. Usually done by American tourists in European countries who come back to their hotel rooms drunk off their ass.
I made sure to leave an extra large tip for the cleaning lady because I had accidentally gone number 3 the night before.
by thehunger August 24, 2007
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The act of performing an abortion on a toilet, flushing down the fetus.
Sally was in the washroom for a long time because she went number 3.
by Gerry McGee April 08, 2008
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Number 3 means full sex with a woman. Ask and agree = three - rhyming slang.
Men often visit prostitutes for Number 3
by Stias September 04, 2005
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To vomit into a toilet. Typically done after a long night of drinking.
"Gross...someone's number 2 is gonna make me go number 3!"
by MarshoT December 01, 2009
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