Talk:"The Seven Deadly Sins Run Wild"/@comment-27.66.158.58-20131122230540/@comment-9768812-20131123020257

Yup. The true meaning is that the person being called a hùn dàn is someone who does things purposfully that are  abnormal (in a bad way) /annoying / make people feel uncomfortable or mad.

e.g. If someone spits into your coffee cup you can call them a 混蛋