is what im doin every day u have practice

The belief that everything was created by your mom.

... She got around.

a disease deeply affecting the brain and mouth as a result of one saying too many "your mom" jokes.

The saying that is to insult one acording to the status of ones mother. Can be related to anyone or anything. Rediculously halrious when taken offencive to, or ment to be offencive.

A nickname used by people who play FPS games online and can't think of a nickname of their own or just want to look like smartasses. On some of those games, when a player gets killed, he gets the message "You were killed by <killer's nickname>". If the killer's nickname is "yourmom", the message will look like the example below.

The belief that having sexual intercourse with your mom is the only true economic system.

well its just your mom