Basically the same meaning as debauchery, but mainly involving sex, drugs, or alcohol. Usually to feel cool or rebellious.
Hey bro you wanna come over after school and smoke some weed?
No no, I find no interest in such douchbauchery. I don't need to be stupid to feel smart.
Excessive indulgence in being a douche.
Come on man, stop this douchbauchery already, you've been being a dick all damn night.