1. When a nice, normal guy decides to transform into a total man-whoring douche face. Typified by ex-boyfriends that change dramatically post breakup.
2.When a nice, normal guy or caterpillar goes into a cocoon after a breakup and emerges as a douche bag butterfly.
Girl 1: My boyfriend went through a serious meta-douche-asis after we broke up. He's serial dating and barely even talks to me anymore.
Girl 2: Total douche.