I do when no one's in the house, seeing as I can only sing in Japanese. What a sight, German/Irish kid singing in Japanese XD
I hate it though, it's hard to keep track of your tone because you can't hear right over the water.
[Edit] I have to say, Jordan and I have something in common! Yay for Hare Hare Yukai singers! Bouken Desho Desho is fun to sing too, I love the chorus ^^