Can't believe no one said these... 1.) dress up like Gandalf (including staff), stand by the entrance to an aisle, and when someone walks by or tries to get in, yell YOU SHALL NOT PASS!!! at the top of your lungs. 2.) dress like a Dalek and run around screaming at the top of your lungs THE DOCTOR'S AFTER ME!!! 3.) dress like a Dalek and hide in a clothing rack. When someone tries to pick a shirt/pants yell EXTERMATE!!!! as loud as you can and repeditly.