This makes me think of a parlour trick I've played many times very successfully. I know it's not done to reveal one's secrets , but I still have a
bagful of them (not in the same category, though...) Some of you may know this one already.

You're with friends. You take a small piece of paper and write in a column the numbers 1,2,3 and 4. You hand a pen to your target and explain to him/her : "I'm going to show you a list of numbers. You must cross one of them out immediately, without thinking, with no hesitation, otherwise it's meaningless"... Then you hand over the paper.

It is remarkable that in an outstanding number of cases, they cross out the 3. Now, of course, the trick is that beforehand, I have written on the other side of the paper : "Why the 3 ???" People are absolutely bemused...

Of course, there's a second trick behind the first one : sometimes, people do NOT cross out the 3... In which case I take back the paper, look pensively at it, and say something like "Hmmm... I see you're a "1" person (or whatever...)" and then can elaborate on that in any which way. Mumbo-jumbo always works (although I may have lost the respect of some people who may think I'm into numerology!)

I tend to write the number 3 very slightly larger (not too large, though) than the others. It may help, but I'm sure there's something deeper about it all.

You're with friends. You take a small piece of paper and write in a column the numbers 1,2,3 and 4. You hand a pen to your target and explain to him/her : "I'm going to show you a list of numbers. You must cross one of them out immediately, without thinking, with no hesitation, otherwise it's meaningless"... Then you hand over the paper.

It is remarkable that in an outstanding number of cases, they cross out the 3. Now, of course, the trick is that beforehand, I have written on the other side of the paper : "Why the 3 ???" People are absolutely bemused...

Of course, there's a second trick behind the first one : sometimes, people do NOT cross out the 3... In which case I take back the paper, look pensively at it, and say something like "Hmmm... I see you're a "1" person (or whatever...)" and then can elaborate on that in any which way. Mumbo-jumbo always works (although I may have lost the respect of some people who may think I'm into numerology!)

I tend to write the number 3 very slightly larger (not too large, though) than the others. It may help, but I'm sure there's something deeper about it all.