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3.
phrase used to insult students at Clarke School in Northampton 1989-1991 to imply improper sexual behavior
a student walks in on another student and a teacher
M: Oh my god! You and Ms. Phelps? Find Out!

or

M: What took you so long in the bathroom?
L: I had to wash my hands...
M: Ugh! Find Out!
by GBOF September 29, 2003
 
1.
discovering, learning about something, a catch-all exclamation of approval (usually dance related). origin: dressing room 15 at the David H. Koch Theater
"I'm going to Stars and Stripes rehearsal,"
Max: "Find out"
"Did you see Katie's Dewdrop, she found out!"
by Dressing Room #15 January 20, 2009
 
2.
a polite/tease way of telling one that you KNOW something is up.
M walks in the lounge and see that K and L are chatting on the couch.
M: oh my god! you two? find out!
by m. October 01, 2003
 
4.
A person who denies that they are gay, but later finds out they are.
"Dude, that burberry wearing freak is such a find out."
by ashisme February 03, 2008