Derpy looks like she's reprising Danny Kaye's role in The Court Jester, specifically that scene where he does battle with Sir Griswold aka The Grim and Grisly Griswold--in this case the Grisly Griffin Griswold, looks like
I'd love to see her take on "the chalice from the Palace"
("The Terms! The Terms! He doth accept the Terms!...")