The Improv Everywhere crew recently hit up the 53rd and Lexington station during the morning commute and attempted to wake up the sleepy-eyed crowd with some high fives.
They IE "agents" reported back that "We lasted for about 45 minutes in total, staying through the bulk of the morning rush. My guess is that people passed Rob at a rate of one per second. So that would be 2,700 people over 45 minutes who passed by and probably around 75% of them played along. I wonder if 2,000 consecutive high fives from strangers is a world record?"