Yes, the Gummi Venus de Milo is real, apparently.

Homer: Ooh, Gummi bears! Gummi calves’ heads! Gummi jaw breakers! (Sees a Gummi figure rotating on a red pillow in a glass case.)

Homer: (Lustily) Ohh…What’s that?

Man: That is the rarest Gummi of them all, the Gummi Venus de Milo, carved by Gummi artisans who work exclusively in the medium of Gummi.

Marge: Will you two stop saying “Gummi” so much?