Define Adept Fucking Wizard Meaning

Adept Fucking Wizard
When playing a game online and there is a kid who is extremely laggy and appears to teleport from place to place.

Kid 1 - I need help i cant kill this guy

Kid 2 - Every time i shoot him he disappears!!! He is super laggy!!

Kid 1 - God damn adept fucking wizard!!!!!
By Zita