Earlier this afternoon the Sesame Street Twitter account sent out a mysterious message, which led to a series of tweets that ended up being an adorable homage to one of the franchise's classic books. 

It began with this: 

There is a MONSTER at the end of this Twitter conversation. twitter.com/sesamestreet/s…

— Sesame Street (@sesamestreet) January 30, 2013

And then Grover started talking:

Grover: WHAT DID THAT SAY?

— Sesame Street (@sesamestreet) January 30, 2013

Slowly the monster began to reveal itself:

Grover: AAAAH!! twitter.com/sesamestreet/s…

— Sesame Street (@sesamestreet) January 30, 2013

Until finally the monster turned out to be Grover himself:

Grover: Well… look at that. This is the end of the conversation and the only one here is ME! twitter.com/sesamestreet/s…

— Sesame Street (@sesamestreet) January 30, 2013

And Grover was ashamed: 

Grover: (Oh, I am so embarrassed...)

— Sesame Street (@sesamestreet) January 30, 2013

The tweets, as folks on Twitter were quick to point out, were an homage to The Monster at the End of this Book: Starring Lovable, Furry Old Grover, which was originally published in 1971. Hear Grover read it himself in this video via BuzzFeed: 

Dan Lewis, the Director of New Media Communications for Sesame Workshop, knew he had something adorable on his hands: 

Let's win the Internet today. In an hour or so.

— Dan Lewis (@DanDotLewis) January 30, 2013

You can see the whole "Monster at the End of this Twitter Conversation" story here at Storify. 

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Esther Zuckerman