Bubble

Well, we can't all come and go by bubble!

~ Elphaba

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A lot of people don't know that Bert and Ernie and Baby Ernie are witches just like Glinda in the Wizard of Oz, but they are. But no one every figured out if they were good witches or bad witches. (Hint: Bert was a bad witch. Ernies were good witches. Note: That is a really clear and helpful hint.)