Piggy maliciously misnaming Denise as "Dennis" reminds me of an episode of SANFORD AND SON where Fred and Grady walked in on Lamont making out with a girl named Denise, and as Grady was going home: GRADY: Goodnight, Dennis. LAMONT: Denise! GRADY: Oh, yeah, right! Denise! Denise the Menise!