The sound an
idiot makes when mocking someone with laughter for something that said
idiot does not understand. Also used following primitive behaviour pertaining to objects of the civilized world (such as slamming a
door, carelessly slamming down one's glass onto a table so the liquid within sloshes about or needlessly hitting something until it works).
"You think that someone who isn't intelligent, knows a lot - dur-hur-hur - you're actually retarded!"
"Uh, stupid
thing - it doesn't work" bangs fan on
desk and inadvertently hits its power
button "Duh-hur-hur! I fixed it!"