LOL, what a costume! Now that's something I don't see every Halloween. It looks like he's trying to achieve some kind of walking "69".

a wild costume. actually i find that costume kind of stupid. but the boy wearing the doll seems to be a teenager who pretty much likes gaining experiences with such a costume... ;-)

fun stuff for Halloween: http://www.concreterituals.com/

Interesting desinterested gestures of the other passengers. must be a common new yorker party-dress ;-)