A person who thinks he is cool, smart, funny, or fun to be around, but in reality is incredibly lame, stupid, idiotic, and just generally annoying.
Maurice was talking to Geoffrey when Martin came and started talking and trying to be funny. This is when Maurice and Geoffrey realized Martin was a total Hornsmaniac.
by Moe January 22, 2005
A dipterous insect of the family (Estridae, of many different species, some of which are particularly troublesome to domestic animals, as the horse, ox, and sheep, on which they deposit their eggs. A common species is one of the botflies of the horse (Gastrophilus equi), the larvae of which (bots) are taken into the stomach of the animal, where they live several months and pass through their larval states. In tropical America one species sometimes lives under the human skin, and another in the stomach