Do not post on this topic unless you have completed this challenge.
A. Go on any Bus or Metro while looking everywhere and being attentive. Then go up to each person and say hi with a smile. Each person that leaves, say bye. Continue this with each person that enters onto the bus and leaves. If Doesn't matter if they're homeless etc... If their is a hoard of people that enter the bus, try to say hi to as many people as you possibly can, same for when they leave.
*This mission isn't as hard as you think. Bus drivers day their is at two one crazy person that goes on his bus during his shift everyday. Trust me, they've seen worse.
~The good thing about approaching on the bus is that their is an extremely high probability that you will never see these people again.