when somebody does you wrong and back stabs you

When you eat dirt for the first time and leave your family to build a shack in the woods

1. putting loyalty in someone, and them turning theirs on you.
2. friends stabbing you in the back.
3. the most hurtful thing anyone can do.

When you make a dealwith one of your best friends, like let your hair grow so you cut both have together a mulet for 1 day, and he (or his girlfriend making him look like a Simp) cuts his hair.

1. to turn on someone you trust, or to have someone do the same to you.
2. team-killing, i.e. in a FPS. More specifically, this is the term used when one team-kills in Halo/Halo 2.

When your best friend deserts you for mean reasons and acts like a meany head.

You were booted from the game for betraying a teammate.