Paranoid man getting off bus: Uh driver... I just wanted to let you know that there's just a man at the back of the bus with a hammer. He's just holding a hammer! Now I don't know what he's building at this time but its scary. He's at the back on the left side.... Just wanted to let you know.
Man gets off. Everyone at the front of the bus starts looking back to see who the alleged criminal is. They are all nervous now and do not want to be the one to get their heads smashed with a hammer.
Man with hammer gets off a few blocks later.
Everyone breathes out and feels much safer.