Japan - Strange T-Shirts

Since I like interesting and funny t-shirts I'm always reading other peoples t-shirts and one thing I've noticed a few times here in Japan are Japanese people wearing t-shirts that I'm pretty sure they don't know what the t-shirt actually says.

Here's a great example, this is a t-shirt that I saw a lady wearing at the Fuji Rock Festival. She was a pretty normal looking lady, not someone who I would expect to be wearing a t-shirt about fisting. But, then maybe she was a lot wilder then she looked.