IMPOSSIBLE QUESTION:
Virtually every adult did this twenty years ago, today it is estimated only 20% of all adults will do this and they will do it less than five times a year; what is it? 

It’s something that was commonly done when shopping 

ANSWER:
Virtually every adult wrote checks twenty years ago, today it is estimated only 20% of all adults will ever write a check and they will do it less than five times a year.  

Congratulations to Dara Gard of Connersville, IN for being the first to correctly answer the Impossible Question!