Top Definition
To like everyone and everything.
This word origniated from the Georgia Nicolson Series by Louise Rennison
"Today, I fell in love 40 times! With just about everyone and everything, I think I have the cosmic horn."
by Massielle August 13, 2005
2 more definitions
A temporary condition in which a person feels indiscriminate attraction, possibly sexual, towards an irrational amount of people.
Zoinks, I just want to make out with every guy I see. Blast this cosmic horn!
by Rachel "Bliggle" Collins November 09, 2006
You will fuck everything that moves.
"She's got the bad sign of cosmic horn, she found out the guy she loved has got a girlfriend. what a dick"
by Lydzieee November 26, 2008

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