A total douchebag and cockhead all mixed into one bigpackage of asshole. Also a derogatory term for homosexuals and preppy blondies.
"AH that Nick kid is such a DOUCHECOCKLE, I saw him beating off into the water fountain the other day in the men's locker room. I heard he got atomic donkey punched right after some kids wheeked that bitch."
It's a lightweight craft used by douches to move around on the figurative conversational currents to spread their message of doucheness to new individuals who were blissfully unaware of their existence. It also has cupholders, which is the only redeeming quality of the douchecanoe.
"Wow, did you hear what Jim had to say at the party last night?"
"Yeah, he came from nowhere on his douchecanoe and made everyone feel uncomfortable."