I got a couple good ones...
You know your addicted when

You miss a shot in basketball and you yell at the hoop "WTF that's a proxy!!"

When the teacher gives your class a long lecture and when he/she's done you yell "Stop hogging the mic!"

When you shoot someone with a water gun you say "WTF he's not dieing OMFG glitcher!"

You have a watergun pistol and someone shoots you with a supersoaker and you yell "You noob with your ****ing noob cannon!!"