Douche. It's... a... feminine wash. For vaginas. Really. It looks like a giant enema bag. You just put the nozzle in and sssqquueeeezzzeeee... and it eliminates any embarrassing feminine odors.
Sanna was so amazed at the concept (I forget whether I used the word douchebag or if it was something that came up in a movie) that I had my mother mail some Summer's Eve over. ("Sounds like a gothic band," said Sanna.)
So yeah, douchebag. Not a nice thing to call someone.
Made funnier by the fact that the Swedish word for shower is dusch (pronounced pretty much identically). And "Deutschland", in English, looks a lot different than it is pronounced.