I felt the anxiety I felt as a child trying to complete flash games on the family computer.
I really like the pace of the game and the overall mechanic, plus the visual style is really nice, it has some "evil cake corporate" vibes that I thoroughly enjoy. the icing mechanic felt accurate to my mouse movement.
would love to see added mechanics if you want to make this a full game, maybe sprinkles? different speeds for frenzy mode? keep it up :)