When Shaggy and Scooby are approaching the Demon as he eats, it is shown that he is eating from a platter of hamburgers and french fries. Scooby and Shaggy bump into his table, knocking the food all on the floor and angering him. The two of them put all the food back on the tray and offer it back hoping he will calm down. But now it is shown to be hot dogs and french fries, not the burgers as previously.
Shaggy and Scooby say they like the Mona Lisa, but you don't see us on a plane to Italy. The Mona Lisa is in the Lourve in Paris, France.
Shaggy said that he's no guitarist, but in previous direct-to-video installments has been shown to play the guitar (or ukulele) quite well.
The Ascot Five's signature song, "Don't Touch My Ascot", is called "You Can't Have My Ascot" on the album cover.