Seat Hogging

Something that is done on a public train, bus, tram, etc... It is the act of one person finding two free seats, sitting down on one of the seats and placing their bag on the other seat to try and deter other people from sitting down. It is often seen as quite rude and selfish when people are hogging two seats. The main motive is mainly because some people feel uncomfortable about a stranger sat in a very close proximity to them which is understandable but not much that can be done when busy though, better than people standing up.