Lois warns Peter that they are renting the house. In "Emission Impossible", it was stated that the house was purchased after a lawsuit involving a broken condom that resulted in Chris. And in multiple episodes including "Peter, Peter, Caviar Eater" and "A Fish out of Water", Peter sells or temporarily loses control of the deed to the house.
Dorothy from The Wizard of Oz is shown wearing ruby slippers as featured in the MGM film. Due to licensing issues, she could only appear in the book's blue/silver slippers previously.
"Up Where We Belong" by Joe Cocker and Jennifer Warnes plays as Joe is carried off to sleep on the couch.
"Stars and Stripes Forever" by John Phillip Sousa plays as the crowd at The Drunken Clam hoists the three guys bound for their third tour of duty in Afghanistan.
A herpes-loaded Stewie wants Brian to hook him up with Neve Campbell so he can serve her a ladel of stew.