QUESTION:  
Over 60% of all teens admit to doing this at night without their parents knowing; what is it?

 
It typically happens in one specific room of the house 
Mom and dad are probably more likely to get frustrated with this more than get mad 
The more they do this, the more money it can cost mom and dad 

ANSWER:
Over 60% of all teens admit to raiding the refrigerator at night without their parents knowing about it!              

Congratulations to Jesse Bromagem of Gettysburg, OH for being the first to answer the Impossible Question correctly!