Singing. I've been singing practically all my life but been taking lessons for about a year. Hardly anyone I know irl knows about that though. I know I'm not good enough to actually make a living off of it but it's something I love.
I, too, can stick my leg behind my head. Both of them, actually...I mean I can't do both and still sit up right, but they can both be behind my neck at the same time
I guess I am a decent songwriter when I want to be as well