Mostly likely pretending to be a hot dog wearing headphones, dancing in the middle of the street. Basically everyone's dream form.
Start to contemplate my very existence and the existence of everything else. I question if anything is real and if the universe is just a speck in a universe full of universes. Or maybe the universe doesn't exist at all and is only a computer simulation. I then proceed to have an existential crisis when I realize I have to work in the morning.