n. An erupting volcano of douchiness.
We left the frat party because it was about to turn into a douchecano.
From Douche and Volcano.
A particularly dangerous form of erupting douche that can go off without warning and expose innocent people for miles around to unsafe levels of douchery.
Oh man that guy on the train was such a fucktard , he managed to piss off everyone in the carriage, what a Douchecano