IMPOSSIBLE QUESTION:
82% of all people say they commonly did this when they were a kid, even though they weren’t supposed to;  what is it? 

This could be done both at or away from home 

ANSWER:
82% of all people say they often watched R rated movies when they were a kid, even though they weren’t supposed to.      
   
Congratulations to Jack Duncan of New Castle, IN for being the first to correctly answer the Impossible Question!