dayyyymn is slang for damn with a an added y pronunciation to add sass and attitude. Usually used when impressed by something.
Daymn girl, you got some moves.
by mary miller June 09, 2008
The ghetto version of <<damn>>. The 'y' stands in to put the stress on the word.
HOMIE: Man, I saw this little shawry walking down the street with a big ol' ass. And I was just like daymn!!
by IAMRoyalty July 31, 2011