1 definition by Sidly

Top Definition
Noun!
Dunder=doofus. Pretty much. =]

"Why did you just walk into that window? You're such a dundertard! Hahahaha. Loser."
by Sidly March 09, 2008

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug