by b dub January 14, 2006
an individual, usually a man, that you are involved with. He is usually not a boyfriend, yet he is more than a friend, sex is typicaly involved. Yet his intelligence is limited and rather than let everyone know you are banging an idiot you refer to him as"dum dum" in an effort to save face and protect his identity and your image. You do not call him dum dum to his face, you only use this term to describe him when speaking with your friends.
Jas: "What did you do last night?
Mia: "Dum dum cam over last night."
Jas: "Who?"
Mia: "Remember the guy I told you about, dum dum?"
Jas: "ohhh yeah."
Mia: "Dum dum cam over last night."
Jas: "Who?"
Mia: "Remember the guy I told you about, dum dum?"
Jas: "ohhh yeah."
by jazziest July 14, 2010
Person 1: Look at the idiot over there. he just passed me a note that says "you are dum".
Person 2: He must really be dum
Person 2: He must really be dum
by sir climer the great May 11, 2017
by trent da DDB November 16, 2008
Possibly the worst ironic word in the intire internet type. A shortenend version of the usually/possibly insulting word ' dumb ', which originally means 'unable to talk', but in todays language, means just plain stupid.
by D Mob January 23, 2005