There is a training program in the C.I.A. and F.B.I.
You tell an interrogator 3 things about yourself. One them has to be a lie.
If they can tell which statement is the lie, you flunk.
Here are my 3
1.I was a virgin until the age of twenty-three
2.My father taught me how to read Finnish.
3.My favorite cat died in bed with me.