Someone who is simply a complete imbecile. This word can be used in certain situations such as driving, internet conversations, politics, or any other activity in which requires it.
Skip Bayless: Aaron Rodgers is being a prima-donna and a diva by trying to force his way out of Green Bay.
The exhaustion you feel after dealing with stupid and/or rude people.
Comes from "plumb tuckered out," meaning tired as hell.
I spent 20 minutes at work today explaining to a customer that he couldn't use his gift card because there was no money left on it. He kept saying "But gift cards are LIKE money". I'm dumb fuckered out; I need a beer and a nap.