To act in a stupid, futile, or otherwise misguided fashion.
He had a chance of hooking up with the gal until he mooked it up by spilling his drink on her dress.
by Mugsy August 14, 2003
Can you define these popular missing words?
Noun: one who acts stupid, dumb, slow, lazy, or clumsy.
You dumb mook, you stepped on my pizza!
by Steve Smith October 18, 2004