by #40 T.C. December 9, 2008

da dun dun is something you say when you have nothing else left to say to somebody that is making you mad, or that you dislike (after you say it you walk away)
by Sharapstar October 15, 2010

The act of getting inebriated then getting behind the wheel of your car and driving at a high rate of speed, risking veering off the road and dying in a ball of flames.
by garrettisagiant June 23, 2011

by pseudo!!! April 27, 2019

When something random and unexpected happens, it is customary to shout DUN! at the top of your lungs. There are also numerous perverted uses of this word, i.e. "IM GETTING A DUN!", "LOOK AT MY DUN!", or I LOST MY DUN!"
The word was first used becuase of the movie Signs. As the alien walks by at the party scene, the sudden music and the unexpected alien suggested that DUN! be shouted. It is also used when a UPS truck drives by.
by Goker April 21, 2006

It is a swift comment simply informing you that you lack any knowledge you have about the situation.
Darnel: ere blud check ma new ting.
Adeolu: ere fam is that fresh.
Darnel: ya Dun No!
Adeolu: I Dun No?
Darnel: Dun No Dun No Dun No.
Adeolu: ere fam is that fresh.
Darnel: ya Dun No!
Adeolu: I Dun No?
Darnel: Dun No Dun No Dun No.
by Nathan Pacey November 2, 2008
