When something is numptified, it has gone wrong, generally in a
silly or just plain pointless
way. Also it can be used to describe somebody's brain function, especially due to lack of
sleep.
"damn it, the cake's gone numptified - it hasn't risen at all"
"Sorry if I'm not making sense, I've gone numptified since last
night's party"
"That numptified checkout girl couldn't find the
bar-code on the back of my
book. It was totally visible though!"