This is one of my favorites from "Christmas Eve on Sesame Street":
The first Grover segment we see where he's talking to a kid about how Santa gets down the chimney:
Grover: "...how does he get down the chimney?"
Kid: "Easy!"
Grover: "WITH all the presents. The big
brag of presents. All those presents, how?"
Kid: "He comes down with his WEINDEEWS!"
A big brag of presents? Oh well, filming with kids, you have to accept those little bloopers.

And right after the kid replies, you can see Grover look at the camera as if to say "Okayyyy......."