I have an Idea. Go in an asile at Walmart and when they use the loud speaker scream with all your might, "AAAAHHH THE VOICES AGAIN!!!!" But you might get kicked out...not saying it isn't fun. *:D*
Ooh, prank call wal-mart, saying that you lost your 5 year old daughter in their store, with some name that is an expletive (split apart like Hugh Jass or something) (dont use Hugh Jass)
then walk into the store and listen to them call the name over the speakers.