You will need a funnel, a coin, a couple of friends and, of course, a victim! Start playing the 'funnel game' infront of your victim. A game of skill that involves putting the funnel down the front of your pants and balancing the coin on your nose with your head tilted back. Tip your head forward to let the coin drop into the funnel. When you have the victim begging to do this put the funnel in his pants and get him to put his head back so you can balance the coin on his nose. As this is happening pour a large drink into the funnel!

Record yourself and several friends making different sorts of bizarre comments and sounds on a dictaphone in low, husky voices. Place the dictaphone on top of a cupboard and invite another unsuspecting friend around. Before they arrive start the tape playing on low volume. When your friend queries the voices that they are hearing act like you can't hear them and try to convince your friend that they're going mad. Works a treat...