When Walkov is meeting a series of women in a hotel room (as well as a few more times after), he can be heard saying "Giggity", Quagmire's catchphrase on Family Guy (1999) for when he says or hears something potentially sexual or sexy.
Lisa is shown teaching Abe and the other seniors how to email. This refers back to season 35, episode 10 where she cited this among her many accomplishments to get into a prestigious summer camp.
