The internet is melting down over this huge revelation. CM took to Twitter to share “Did you know me name is Sid? But me still like to be called Cookie Monster.” Yes… Sid! Reactions ranged from “what!?,” “I never knew” and “I did not know this. Sid is a cool name.” The revelation that the fuzzy blue puppet has an actual human name has clearly been a sweet treat for people, with the post picking up more than 38,000 likes and thousands of comments.