Fenders are mudguards! Obviously!!! ;)
Can't see myself becoming fully americanised, but knowing the local words does have it's advantage - just joined a German cycling forum (I left Germany before I started cycling again), and the lingo is a nightmare! They keep going on about the "Vorbau" and other weird stuff - took me ages to work out they mean the stem!
As for the movie example - even over hear you would put your pants on (at least round here), but go to the cinema or, indeed, the pictures - personally I favour the cinema! :-)
Amsterdame ride coming up in 4 1/2 weeks - things still looking bleak on the sponsorship front, but I'm getting very exited!

