A male version of a chicken head. They don't know how to act, so they tend to act foolish.
Why are you talking to that boy? He's trippin, he is a dundahead.
מאת Laughing Like Crazy 22 ביולי, 2010
It literally means 'dickhead'. It comes from 'dunda' meaning 'penis' in most Indian languages. Not to be confused with the Scottish 'dunderhead' which means stupid.
Donald Trump is such a dundahead.
מאת Vajayjay Petal 16 במרץ, 2016