it seems to work ok for me. I put one of your jokes into your page using Firefox:
You know you're working class when your TV is bigger than your book case
the French version comes out
Vous savez que vous êtes de la classe ouvrière lorsque votre téléviseur est plus grand que votre caisse de livre
the translated back to English version shows
You know you're working class When your TV is bigger than your book box
(note that the W has been capitalized and "case" has been changed to "box")
so obviously it's not just transferring the English straight across. Caching issues, maybe?