Cart Sign Stand

hide in the toy section, when someone comes close jump out at them throw a ball and yell "Pikachu I choose you!"

Walk through the store pushing a cart that is upside-down.

Move "Caution: Wet Floor" signs to carpeted areas.

Look right into the security camera, and use it as a mirror while you pick your nose.

Get a friend, put on as many articles of clothing you can find and start sumo wrestling (use diapers if possible) .

Constantly wink at a person you don't know. Follow them around and blow kisses to them.