Definitions by ALS Project

Animal mastery 

noun: When playing certain role play games, there is a skill call "animal mastery". This means that the character can command animals. In real world terms, this means that the person loves animals and is really adept at having sex with them.

Mak is very good at animal mastery.

Animal mastery by ALS Project May 11, 2003

Horseboy 

noun: A boy (or man) who loves horses (in a very intimate way)

Mark is a big horseboy

Horseboy by ALS Project May 10, 2003