The Bennigan's Theme Song was featured in the Season Five episode "Butters' Very Own Episode".
Background[]
Butters Stotch, in attempt to return home, seeks directions from an old mechanic at the Loomis Gasoline, who then leads him to a haunted road. Butters tries to calm himself down by singing the theme song to Bennigan's (the restaurant which his parents had planned to visit for their anniversary), while being exposed to eerie noises and passing creatures.
Lyrics[]
For family fun and great food, too, come on down to Bennigan's
Buffalo wings and fried cheese sticks, the best are found at Bennigan's
So come and eat at Bennigan's
You'll love all our shenanigans.