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WkLpL TIL In a 2004 episode of Sesame Street, Cookie Monster revealed that before he started eating cookies his name was Sid.
loo0K TIL Muppet designers use different sized pupils depending upon how young or old they want a Muppet to look. The smaller the pupil, the older the Muppet looks; the larger the pupil, the younger the Muppet looks.
6EGNX TIL that because oils from cookies can be damaging to puppets, the cookies consumed by the Cookie Monster on Sesame Street are actually rice crackers painted to resemble cookies