One of the best "fake ad" skits on Saturday Night Live. It was first broadcast on 21 Oct 1995. It shows a group of kids playing with a ball and a cheery voiceover shouting "It's happy! It's fun! It's Happy Fun Ball!" Then a cliched narrator expounds on the virtues of the Happy Fun Ball while quickly running over the small drawbacks, which include: "Itching, Vertigo, Dizziness, Tingling in extremities, Loss of balance or coordination, Slurred speech, Temporary blindness, Profuse sweating, Heart palpitations." This might be because "Ingredients of Happy Fun Ball include an unknown glowing substance which fell to Earth, presumably from outer space."

But I think all rational humanoids can agree that the true brilliance of the bit is distilled into one perfect line.

"Do not taunt Happy Fun Ball."