Why Being Able To Tickle Yourself Is Very, Very Worrying
There are some things - like sneezing with your eyes open, licking your own elbow or tickling yourself - that your body is just not designed to do.
Except that some people can tickle themselves and it's not necessarily a good thing.
According to Dr Thomas Whitford, a professor at the University of New South Wales, getting the giggles by the work of your own fingers demonstrates a higher degree of schizotypy, which you can think of as a collection of personality characteristics.
Examples given include eccentric behaviour and not having many close friends and, the higher your level of schizotypy, the more at-risk you are of having disorders like schizophrenia.
Basically you struggle to distinguish between sensations you are making and sensations being made to you by other people - like tickling.
"Everyone has some degree of schizotypy," Dr Whitford explained. "Some people score high, some people score low.
"The higher you score, the better able you are to tickle yourself."
We'll give you a minute while you try it out.