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.'
used in lieu of dumbfuck or fucktard, should you find yourself in a situation where dropping the F-bomb is a bad idea (i.e. a public place with young children and their aggressively conservative parents around)
I wanted to tell John what a fucktarded asshole he was being in the supermarket, but after noticing the soccer moms' death-glares, i settled for 'dumbtarded a-hole'.