Quagmire mentions that he got another cat. His first cat, James, was in the 420 episode.

Brenda's abusive boyfriend Jeff is angry that Brenda changed the channel on the TV while he was up getting himself a beer. Brenda tells Jeff that she just wanted to see who was on 'Letterman'. Jeff angrily tells her that they are watching 'Leno', not 'Letterman'.

After Peter, Joe and Quagmire kill Jeff, Brenda's abusive boyfriend, they read a "Dear John" letter that is supposedly from Jeff to Brenda. Peter is the one who actually wrote the letter, and he included at the end, "P.P.S. I really love Grape Ape".

Brenda's abusive boyfriend Jeff is angry that Brenda changed the channel on the TV while he was up getting himself a beer. Brenda tells Jeff that she just wanted to see who was on 'Letterman'. Jeff angrily tells her that they are watching 'Leno', not 'Letterman'.

Quagmire's sister sings this song, but with different lyrics.

Lois says that Quagmire's sister Brenda's situation of being involved with an abusive boyfriend is scarier than an Iraq Lobster. Peter then sings a parody of the song 'Rock Lobster', changing the lyrics to 'Iraq Lobster'.

This song is played during the clown porn.