What's the most disturbing thing about Hey Arnold?
The fact that that isn't a skirt, but the bottom of his shirt hanging out?
The fact that, if the laws of physics are to be obeyed, he must have a serious bald spot under his ridiculously tiny cap?
No, IT'S THAT THERE WAS A FREAKING ORAL SEX SCENE IN THE BACKGROUND OF AN EPISODE AND WE ONLY JUST NOTICED.
The vine (below) shows two unknown characters in a window, and one of them appears to be - and truly, we do not say this lightly - eating ass.
Apparently the character is actually licking his plate clean, but ain't no animator alive that didn't full well know what they were doing.
Sweep up the shattered fragments of your childhood on the way out, k?
Related: Adults Confess What They Thought Sex When They Were Kids