What are some creepy moments that you've seen on cartoons?
I saw something creepy in the second segment of this episode:
RUGRATS S01E03 - At the Movies/Slumber Party - Watch Movies Online For Free on TubePlus
It's a very old Rugrats episode - from 1991, probably before many of us were even born. It's the episode where Angelica is at Tommy's house and opens his bedroom window during naptime, which results in Tommy getting a bit sick. Note that when Angelica opens the window, the wind makes a heavy, almost unnerving sound. And that's nothing compared to the fever dream sequence later in the episode, where Tommy imagines his crib growing gigantic and starts to see rather disturbing hallucinations. Until I was about 15, the dream sequence really scared me. When I was about 10 I had a nightmare similar to Tommy's dream, only it was a good deal scarier. (The fact that the animation is dated makes the dream sequence creepier.)
What cartoon moments were scary for you? (Try to stick to western animation for this - maybe someone else can make one for anime.)