technically speaking...no. there was lots of times when the cast (or more specifically John) had to dance for one reason or another however. They made up for it in crazy homages to things like Loony Tunes however.
I believe it's supposed to be Meg, but without hair or a cap, she comes off looking like Lois...
Of course, along the lines of the Star Wars episodes, they could've gone for a double dose of Lois rather than letting Meg play any of the characters. :P
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amused