a massive orgy for jewish teenagers
David went to usy and h.u with two girls at the same time
by david November 28, 2004
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It's a 'selfie' photo in which the subject of the selfie is joined—or crowded, or photobombed—by at least one other person.
That was a funny usie Monika took of the girls at my party
by Jagat9606 April 22, 2015
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jewish teens pretending to act overly jewish when really only there to get action
"We were ...praying :\ at USY"
by hanefesh chapter May 26, 2005
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A group selfie; a picture one takes with themselves and many others in the photo. One takes an usie to be silly with friends and have fun taking random pictures of themselves.
Guys, let's take an usie!!
by teamimperiumsbest July 13, 2013
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The most awesome Jewish Youth Group EVER!

AND NOT A CULT LIKE NCSY! (they are so uncool they dont have a definition)

Also a great place to hook up with ECRUSY (pronounced E-C-rusy) girls.
Josh went to USY to hook up with some ECRUSY girls, but couldnt because he had mono.
by ecrusyer June 6, 2006
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A Cult of Jewish Teenagers looking to hook up
Yeah i just HAVE to go back to USY you dont understand
by Jappy Jew May 31, 2005
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In Seaboard Region: Unusually Sexual Youth
In Maryland, we're all a bunch of USY.
by Ben L October 17, 2004
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