Fats Waller Cat: Where is I at?
Giant Lips: You is outa dis world!
Fats Waller Cat: Who dat?
Giant Lips: Well... who dat?
Fats Waller Cat: Who dat say who dat when I say who dat? Was dat you?
Giant Lips: Mmmmmmm... could be!

- Mel Blanc in Tin Pan Alley Cats (1943)