Omnimpotent

A portmanteau of omnipotent and impotent meaning completely and utterly useless. Not of any value or function.

1:"Hey, can you take out the trash?"
2:"I'm playing Call of Duty right now"
1: "God you're omnimpotent!"
2:"Don't you mean omnipotent?"
1:"No I meant omnimpotent, because you're all around fucking useless!"