Hypnosis is a very useful and helpful tool in the hands of a careful and honest practitioner; on the other hand it can also be used by people who are uncaring and downright dishonest. Unfortunately, there are so many people using this very powerful form of therapy for entertainment nowadays that it is impossible to control the situation. The answer to your question in real terms is quite complex, by this I mean that there is more than one possible reason for your problem. One of which has already been mentioned before i.e., Drugs! But the facts regarding hypnosis are that not everyone is susceptible to suggestion to the same degree, meaning that there are roughly about three stages to which people respond during hypnotic suggestion. The first stage is a very light one, whereby a person would not be as deeply hypnotised as the other two, about six out of ten people are in this category, the second stage, the mediums, they are fairly good subjects and can be treated therapeutically via suggestion to quite some degree of success. But the last subjects, who number only about one in ten, are capable of the very deepest trance state, and it is only these persons who are used by stage Hypnotists and the like, to demonstrate their powers.   So it would mean that one would have to be first given some form of susceptibility test by a practicing Hypnotist, to determine to what stage a person would be likely to go, and only then if you were one of the very deep trance subjects, would you be able to be given a posthypnotic suggestion to which you would feel compelled to act upon at a later time or date. None of this is a very simple quick and easy thing to perform unless you are a completely willing participant in what is taking place. Remember, no one can be hypnotized if they do not agree to take part in the performance in the first place. After you have taken part in such an act, and only then providing that you are one of the very best subjects that I have described above, yes, you can be told to do things that you would not normally do, but only if it were within your normal code of ethics would you act upon it, and you would not always remember having done this if the Hypnotist had suggested to you that you should not do so. If all these things that I have described have taken place in public, or in the company of others, then they would be able to tell you these answers. Of course if it has taken place in private, then it would be only the person who had hypnotised you that would be held responsible, and remember, it would not be the first time that an unscrupulous hypnotist has been successfully sued in court! I leave you with this sobering thought, and hope that I have been able to shed some light on the subject, of which I have spent a lifetime in the study and practice. Yours sincerely, Gerald. Hypnotist.