By Paul Seaburn Via MysteroiusUniverse - March 2016 Everyone knows you can't make yourself laugh by tickling yourself – right? Wrong! People who can actually tickle themselves into convulsions may be hiding it from you because, according to a new study, it's a sign of a tendency towards schizophrenia. We'll wait here while you hide and tickle yourself. What happened? Did it last more than four hours? Did you call your doctor? Before you answer, let's learn a little more about the research. The inability to tickle oneself is one of those mysteries that is accepted yet defies explanation. However, in 2000, neuroscientist Sarah-Jayne Blakemore found a few people who could actually tickle themselves into laughter. Those people were also schizophrenics. Blakemore theorized that their brains could not cancel out the consequences of their own actions, which is why they also experienced paranoia and hallucinations. According to a report in the journal Consciousness and Cognition, that theory