This youth on the subway refused to move his legs, so this guy decided to sit on him

In most cultures, it is the custom to give up a seat for someone who is elderly, pregnant, or disabled to sit down. This implies that if a teenager was on a train or bus and an older person boarded, the youngster should relinquish their place to them.

Because it would appear this kid had not been taught such manners, we can only imagine that he would have just stayed sitting and ignored any such passengers.