I saw a man "dancing" on bus and holding a pillow trough the hole journey, has anybody ever witnessed something like that?

It was so much weird, trough the hole journey he has been standing up and holding a pillow and moving a little bit like he was dancing, he was looking at the window all the time, like he was looking at somethong outside, he wasn't smoking or drinking alcohol or doing drugs, I'm wondering if i ever gonna see anybody like that.