Working at the return desk at Torys R Us for the majority of my working life (thank god those days are over), I got more than a few videogames back resealed with blank discs. Sometimes it's the employees who jack the goods and reseal it, and sometimes its the customers, but you can always tell. It wasn't my place to play toy vigilante when I was only getting payed $9.50 an hour, so I always took it back anyway.
You know you wanted to be like this guy, Matt. Riding the highways seeking out those who would dare to return blank discs and defective toys. Those who injure Toys R Us are already dead. They just don't know it yet.