A rat (person) that craves physical and sexual contact with the opposite gender.
Dude! John is such a hornster feelin up all those girls
by Pigeonsodomizer April 26, 2019
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1. A sexually aroused man
2. Another name for rhino
"Let's have sex."
"Okay, Mr. Hornster."
by misterhorndog November 28, 2013
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