French is such a beautiful language - that's why I took 8 years of it in school - no matter what you say you sound as if you are making love.
And Italian, in my opinion, is the most lyrical sounding language in the world so even the curse words are melodic...
German is another story - I love you in German just doesn't have the same ring to it...
As for Josh, from what we know he has a pretty decent facility for learning foreign languages so I'm sure that in no time at all he'll be cursing in German like a pro...