It is used like a synonym of "When you are doing ___"
Me: Yo Chad, This chick sent me booty pics in the shower and i told her to send me some more often whenever she was In the Function.
Chad: Rad bro!
by Gucci Wasabi November 7, 2017
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Coined in the Bay Area in California, a "function" is another word for a party
Did you see him at the function last night? The boy was giggin'.
by Grace M for Composition Class October 10, 2019
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a party, or a kick back.
that function last night was crazy!
by brackinkidd August 19, 2009
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If you're from San Diego, you know what a function is.

For you outsides, a function is a kickback, party, where people be swanging, getting faded and fucked up. An infamous place for fights and drama.
Person 1: You going to the function tomorrow?
Person 2: Nawh, my girl don't like it when I go to functions, she don't trust me.
by SExSD October 22, 2011
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Function. A non-word that is used by everyone who has ever done any thing with software.
This functionality will help you overcome the opportunity presented by your synergistic paradigm.
by teej October 16, 2003
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Something that is both functional and fashionable. Used frequently by fashion models in Europe when describing an item used to accessorize their outfit that can be used day to day.
Wow that purse is very functionable
by CJOII August 28, 2010
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