Magaggie

A Simpsons reference from From Season 5, Episode 21 - Lady Bouvier's Lover.
Magaggie is Maggie's name, but misspelled.
Homer misspelled Maggie's name when he frosted the birthday cake.

Marge: "Homer you didn't do a very good job frosting Maggie's birthday cake!"
Homer: "What, It's not Magaggie's birthday? Oh..."