Definitions by lil nem

dummy up

Verb: to screw over, go back on your word, mess up, act stupid, say something retarded, piss some one off, be trippin on some one or basically do anythin that could make someone mad or think your stupid
Adjective: Someone who dummies up

Verb: That bitch just dummied the fuck up.
Adjective: You are soo dummy up right now.
That dude is DUMMY UP.
You dummy up asshole.

dummy up by lil nem June 11, 2006