Here’s my theory: Harry Reid attended a party with a group of Hollywood celebrities, when he and Rosie O’Donnell both reached for the last piece of pie at the same time.
“the last piece of pie”
Considering it is Rosie O’Donnell you are talking about, I tend to think of another word that begins w/ the letter “p” that she would want a “piece” of. The word is related to cats.