Someone who is a jackass, dickhead, cocky, or a jeffrey.
Hey jeffrey, stop being a duesch.
by Spot March 09, 2004
A common misspelling of the word "douche" often typed frantically by 12-year-old children in an attempt to insult strangers via the internet.
"omfg dude u r a duesch bag"
by Gyrapage March 10, 2007