1.a phrase used to express elation and 2.a common mis-hearing of a line in a popular song
miff and shmingle! I've won a plastic troll in an MTV competition
Miff Miff is the mispronounced version of Mrs. Smith. It was originally said by the great the amazing Kael. He got a little too excited while talking to a teacher named Mrs. Smith.
I was talking to Miff Miff and she said that I could eat here.