Means Flower in Quechua language
Look at that pretty sisa.
by Sisa April 23, 2009

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Top Definition
A slang for 'yes' in colombian spanish. Similar to the yeah in english, but usually used for people from the lower social class.
Decent Person: Would you like a cup of tea?
Not Decent Colombian: Sisas parce!!
Decent Person: Bye
by C26000a February 17, 2008

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Studying Induced Social Awkwardness - when the time spent studying in a group (or alone) leads to social awkward behavior. These include but are not limited to laughing inappropriately, juvenile humor, and interactions that are abnormal at best.
He asked me how to get to the library. I forgot where it was. I had just left the library. Such S.I.S.A

She just changed her profile picture to be the cover of a book authored by a guys named Funk and Seamon... epic S.I.S.A.

Girl: "Hey, wanna come over later to, ummm, study"
Guy" "Do you mean sex?"
Girl: "Oh, God no, sorry, I momentarily forgot the word "study" - I didn't mean to suggest, no, i mean, not that I wouldn't be into it. Oh, God. Um, so, does 11 work?"
Guy: "S.I.S.A... i get it. I'll bring my Funk & Seamon study guide."
by eg$ April 28, 2011

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Used most often when seeing someone's sisa in a public place, as in the supermarker.
I seen yo sisa in tha sto the udder and she be coolin out at da maw.
by bluntedboy April 25, 2004

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sisa is a synonym for sister
my sisa ate my cheese
by hollywood13579 March 13, 2004

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croatian word meaning tit
ova ima ljepe sise

(shes got nice tits)
by Fonz May 02, 2004

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