Cookie Monster is the cookie-obsessed Muppet from Sesame Street, the long-running children's series that first aired in 1969. Voiced for decades with a deep, gravelly growl, the character is usually heard asking for cookies rather than screaming, which makes this extended scream feel especially out of character online. Clips of familiar TV characters losing it have become a staple of meme soundboards and short video edits, and this one spread as a reusable reaction sound for moments of mock horror, frustration and exaggerated excitement.