SpongeBob trying to warn us?
This particular episode was about the miserly Mr Krabs trying to seduce the children of Bikini Bottom into buying more Krabby Patties, by saying things like "When yer all done playin' why doncha all come inside for a delicious, nutritious, vitamin enriched Krabby Patty! Ararararar!"
and by having SpongeBob abuse himself to amuse the kiddies.
From the kitchen in which we were lurking, my sister and I could see snippets of the disturbing episode, and she made a frightening point. I paraphrase:
"This episode is showing how evil advertising to kids can be, and then right after this episode is over, Nickelodeon's gonna bombard us with commercials for Chef Boyardee and Froot Loops."
Scary.