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When you find yourself thinking about, in love with or infatuated with someone you follow on Instagram that you may or may not know in real life.
Hey! You should follow back cutegirl123. She has an instacrush on you.
by seagreene April 02, 2014
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2
to instantly find yourself fawning over that one hottie with the sparkling eyes, and that beaming smile. you probably don't know their name, and they probably don't know yours, but who cares its infatuation at a first glance. its not necessary to know much about that person, besides the fact that they're oozing in appeal.
Guy1: " oh man did you see that waitress over there? "
Guy2: " you mean the one in the miniskirt?! hot! "
Guy1: " No shit."
Guy2: "instacrush dude, instacrush. "
by donteatcows October 12, 2007
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