i had to find something new in every corridor , because if i used a mark that was similar to one i 'd committed to memory already , i 'd get the two confused and end up chasing my tail . you know , one pi helping out another ? with the coin in my hand , i clap . `` i do n't want to let you down . '' `` it 's not for me , of course . '' in fact , they often behaved like rock stars . `` and may i ask ... how is your wife ? 