Episode 0851


 * Oscar the Grouch has an argument with a record of his own voice.


 * Ernie and Bert: Ernie wants to have some cookies. Bert asks Ernie if he knows what "before" means, and Ernie demonstrates by saying that before he can have a cookie, he has to open the lid to a cookie jar, and after he closes the lid, he eats the cookie. He demonstrates a few times, until he loses his appetite for dinner.


 * The Martians discover a telephone.


 * Sam the Machine does not respond to Bob's request to stop talking. Sam claims he has been programmed to answer all questions completely.


 * Big Bird writes a poem about a friend of his, but he forgot who the poem is about. He ends up writing about Mr. Snuffleupagus.


 * Muppet & Kid Moments: Grover demonstrates high and low by having Heather scratch his back.


 * Ernie and Bert: Bert thinks that Ernie has eaten his cookies, but it turns out that Cookie Monster (dressed as Ernie) ate the cookies.