text: Lennon changed it to Pam when he saw the opportunity to ease the segue into the song `` Polythene Pam '' , which follows `` Mean Mr. Mustard '' on the album .
simplified: Lennon changed it to Pam when he saw the ochance to ease the segue into the song `` Polythene Pam '' , which is after `` Mean Mr. Mustard '' on the album .