moronic railway traveler

I was on a crowded MRT train just now and this guy was leaning against the grab pole. Being the bastard that I am once in a while, I grabbed the pole near the guy's head level, and rested my forearm on his shoulder. The advantage of being tall.

As the train entered Newton Station, I wondered how many newtons of force was my arm exerting on the man's shoulder.
Seriously, if the train wasn't crowded, I wouldn't mind even if you did a pole dance.