What is The Cookie Monster?
1.
The blue...thing in Sesame Street that used to consume cookies in large amounts, but has now been turned into the Veggie Monster to make sure that the children of America will not go and become fatter than their parents.
"Hey, did you see the Cookie Monster?"
"Say what? Who dat?"
See
2.
When a man takes a full stack of Chips Ahoy cookies and places them at the entrance to a woman's vagina. He then proceeds to push the entire stack of cookies into her vaginal cavity and break them up with his penis as they begin intercourse.
Amy: He gave you The Cookie Monster?
Betty: Yeah I'm queefing fucking crumbs!
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3.
when one eats cookies, then
"dont laugh too hard, you might pull the cookie monster again"
See