I know 'Uboote Deutsche', and a couple of curses...in fact I can mutter curses in about four different langauges

Comes in handy at work when I can't swear at the customers
As for my other half, well...she's not so good, in fact, I think the only German she knows translates into 'I am a Wellington Boot' which is not that useful I guess....
Then again, for casual conversation, neither is 'Ruhr Eins Los!' I suppose