Dr. Doofenshmirtz's Sweet Revenge

Dr. Doofenshmirtz wants to turn the horns of rude truck drivers into candy, but when his Other Dimension-inator gets activated, things turn out a little differently.

(Actually, it's a prequel.)

Dr. Doofenshmirtz has a plan to turn the horns of all of the rude truck drivers in the Tri-State Area into candy, but when his Other Dimension-inator gets activated, things don't turn out the way he intended.