The crossover sequence with American Dad! (2005) and King of the Hill (1997) was originally going to be the opening for April in Quahog (2010) but it was removed for time reasons, so they saved the sequence and use it for this episode instead.
"Monsieur Quagmire" is a takeoff on Jerry Lewis who is very popular with French people.
(Latin) "Nullum gratuitum prandium" means "no free lunch".
The "Canadian Nudie Bars" song is a parody of "Merry Old Land Of Oz" from "The Wizard of Oz" (1939).
The Title 'Bigfat' is a take on the myth of a large hairy wilderness animal called Bigfoot in USA.