Shopper of Mass Destruction

The retail shoppers who make sure that they mess up the whole store in search for that one shirt they MUST have which ends up getting returned a week later.

John- "My department looks perfect. Nothing can mess this up. I can finally relax!"
Bill- "OH No! Its a Shopper of Mass Destruction! Hurry and lock the doors.
John- "I don't have enough time...We're done for...!"