look up any word, like cleveland steamer:
 
1.
A GTO owner. The Pontiac GTO is often called "Goat".
Jeff is a Stanger, Jim is a Goater, and Joe is a Stinger. Joe wins all the races, Jeff always comes in last.
by Marten Fisher November 25, 2006
 
2.
Someone who is or has been in a relationship with a goat, or a person who has multiple goats in his house
The mentally challenged man was a goater
by goat42 December 12, 2010