Yes! Hypnosis is a natural state of mind that occurs in most people on a regular basis.
Hypnosis is a state of intense concentration or focused attention marked by increased suggestibility. The hypnotic trance state is created by way of an "induction". An induction is a way get the conscious mind to take a back seat and allow access to the unconscious mind.
No, but they are enjoying using their imaginations in ways they probably haven't since they were children.
Stage Hypnosis can mean one of a few different things;