dumbfire 

(adjective) A projectile lacking any form of guidance, other than normal aiming. Generally used to distinguish it from "smart", "intelligent", or "precision guided" weapons. (i.e. dumbfire rockets).

When our helicopter's targeting system failed, we had to use our Hellfire missiles as dumbfire rockets.

dumbfire by Maschinenmensch January 5, 2017

dumbtired 

Someone who is too tired to make food to feed themselves, which makes them dumb. This usually causes starvation and leads to death, which for us gen z kids isn't so bad.

'I'm so hungry'
'Make yourself food'
'I'm too dumbtired.'

dumbtired by DevilishHalo January 10, 2019

DumbField 

One who constantly performs thoughtless errors

Stupid dumbfield you just dumbfielded that one

DumbField by Ben Smith September 30, 2004

Dubfired 

To be invited or supposedly welcomed, to participate or attend, in an event, party or show, which you ultimately get denied access to.

Ali ‘Dubfire’ Shriazinia, new Dark Lord Of Techno, and one half of the Grammy winning DJ/production duo Deep Dish, tried to get in @ The Fifth, a trendy club in South Beach, only to be denied entry. Dubfire apparently wasn't on "the list".
Dubfire was dubfired @ the door.

Dubfired by Sparko March 28, 2008

Dumbfidence 

The god given talent that allows dumb people to lead a successful life through the confidence their stupidness provides.

It is most probable that this confidence comes from a complete lack of morals or social awareness, meaning someone with dumbfidence will never question their own actions or opinions. This provides them with the confidence to be a success (...a chicken or the egg scenario).

see also: Footballing Brain

1:
q) How the hell is Boris Johnson mayor of London?

a) he's got Dumbfidence

2:
q) How did someone like John Terry ever become England captain?

a) Dumbfidence

Dumbfidence by G8HAUS March 13, 2010