Why it worked
The video likely worked due to the creator's playful "I said I'd never do this" framing, which creates intrigue and relatability. The visual of a large cookie dough log dipped in chocolate frosting is also highly appealing and satisfying to watch.
Summary
The creator dips a large cookie dough log into Duncan Hines Creamy Chocolate Frosting and sprinkles it with rainbow sprinkles. She then proceeds to eat the chocolate-dipped cookie dough log, taking large bites.