Revved up douche

Taken from a lyric of Manfred Mann's "Blinded By The Light". A revved up douche is a douche of a person who is 'revved up', i.e., acting particularly douchey; someone being extra rude, loud, over the top, etc.

To be revved up like a douche is to be someone exhibiting behaviors like that of a douche that is revved up.

"Did you see that revved up douche in the crowd?"

See also:

"Man, Jack was really revved up like a douche today"