http://twitter.com/#!/markknoller/status/409090920009572352

Here are three guesses speculating about which Muppet CBS News’ Mark Knoller was referring to:

http://twitter.com/#!/Matthops82/status/409091209919881217

And this final guess is a vigorous defense of the Veep:

http://twitter.com/#!/exjon/status/409091674837504000

Read more: http://twitchy.com/2013/12/06/3-guesses-to-which-muppet-did-michelle-obama-read-twas-the-night-before-christmas/