Blockbuster is always a good place to burn some time. I've spent an hour in there just reading their magazines and pretending to look around at movies with some friends. One time, I switched off this dirty movie (I think it was called "Single Sex"...) and put it behind "My Big Fat Greek Wedding" since there were no more copies of it left, and I came back a few minutes later and it was gone.
Someone went home with what they thought was "My Big Fat Greek Wedding" without checking it and ended up with some porno... or one of the worker's just put it in it's right place. Let's just hope it was the first one.