Borrow your best girlfriend's dress that immediately identifies her. At a romantic dinner spill your beans on your same friend's naughty side. Come home, get him drunk, and tell him your friend is coming over. As he lays inebriated somewhere out of sight, slip into your best friend's dress, dim the lights and tell him that you have always F-A-N-T-A-sized about him. Strip the birthday-boy to the last clothing and lick the last froth of whip-cream out of his love-pole. Make him moan like a wounded Lion King and when he cums make it feel to him that the house is being hit with a 9.7 Richter scale earthquake.