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1.
horn-a-trate (verb)
The act or acts of being penetrated sexually in the rectum or mouth by any type of horn.
Can also be used as hornatrated or hornatration.

Examples of horns: Unicorn, airhorn, rhino, devil, bull, ram, car horn. ETC
Man that girl got double hornatrated by BOTH those unicorns at that party last night.
by SEBADASS420RICKDANK June 06, 2011