Trick your Friends into thinking you've completely lost 'the Plot' by imagining you are wearing a 'Magic Cloak' : Simply lift both arms together, bring them around to meet at the front whilst simutaneously dropping your head as if hiding under said Cloak. After a second or two, bring your arms backwards and finally lif...t your head. Make this look even more convincing by saying out loudly, " Now you see me....Now you Don't ! "