Top Definition
n. near inevitable romantic relationship arising out of the sex-hungry state created by vacation

Instant Romance: just add summer camp.
Guy: Man I can't get a girl friend
Wise Man: No problem, go to that summer camp your parents are trying to send you to.
Guy: But it's a church camp and I'm a virgin.
Wise Man: Perfect! Religion, repression and tents make the perfect conditions for an instamance.

Guy 1: You still talking to that blonde you met on the cruise ship?
Guy 2: Tropical instamance is especially strong.

I think Danny and Sandy from Grease is my favorite instamance.
by mytime_notyours July 20, 2010

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