Buzz·Posted on Jan 13, 2009How To Hallucinate With Ping-Pong Balls And A Radio...and other crazy methods of messing with your own perception.by Eliot GlazerBuzzFeed StaffLinkFacebookPinterestTwitterMail How To Hallucinate With Ping-Pong Balls And A Radio boston.com Also, don't look in the wrong side of binoculars.