I haven’t had a chance to watch the video, but if it’s less than five minutes long it’s far from all of them, although I consider “adult” jokes to include dialog and themes that children just can’t be expected to understand. Mr. Krabs, for example, is an extremely exploitative capitalist who has made his fortune by developing a secret recipe for sandwiches made out of his own kind.
There’s a lot of pretty fucked up stuff in that show.