I actually remember visiting a Japanese friend in Kamakura, and she showed me around for the whole day. When we were on the train, she had to get off earlier than me, so I thought I would say a simple goodbye and send an email (I figured she'd feel weird if I hugged her on the train). I was still sitting, she stood up, got really close to me gave me one of the biggest hugs I've ever received in Japan. If I had been standing, I probably would have gone weak in the knees...that hug really felt that nice. I didn't care that people on the train were staring...it also didn't hurt that I thought she was really cute.