a suffix added to a name to show dislike. Means the person is a big bag of shit. Commonly used by children. The only appropriate time to say this as an adult is when drunk and talking to a douchebag.
More effective if it rhymes with the name or creates an alliteration.
Timmy: "Matt Doodie-dufflebags is a piece of shit."
Timmy's mom: "Don't say 'shit', you're twelve."