Do you know of any stupid things people do in order to find out "who's thinking of them"?

For example when you sneeze you tell someone to tell you a three digit number, then you add the digits and the number/s you found correspond with a letter of the alphabet. From that letter, you think of the names that start with it and these people were thinking of you. For instance I give you 156 so your numbers are 12 and 3 and your letters are L and C, so the names could Lena and Christine.