I can't resist these semi-spontaneous actions..! (as can be noted here and here)
This is something even I would participate in and pull of my pants and stand there like it's the most normal thing in the world (even risking literally freezing my ass off in the subway) simply beacause looks like so much fun! The reactions of the other passengers.. *giggles* The guy at around 1:25 made me laugh like crazy.
via Color Me Katie