Dunn or Dunned means the most vulgar smell in the word and its origins are from a person's mouth that has not brushed their teeth since 2005 Christmas eve. the smell is the smell of years of tar-tar and plaque build up not too mention the years of decaying.
oi, you've been done DUNN (dunned)
you've been DUNNED up
A person with a severe lack of a social life and is not liked
The dunster
The dunwagon
Dun dun dun
Dun truck
Dungon
Dunderstruck
Dun can
Dun mobile
Man here comes Brendan Dunn
The biggest most savage math teacher at CMS. He is the greatest math teacher ever in existence. Always gives 10 page packets.