I think the Spongebob Squarepants show can be appreciated by any age group. The show is loved by kids by Spongebob being so care-free and Patrick being a simpleton. But if you are an adult and are still watching it you may stumble on episodes that contain scenes that seem innocent when you were a kid. An example of this is the episode of Procrastination where Spongebob needed to make an 800-word essay.
At first, he was full of passion in completing it but as the day went by, he made other plans but not his essay. He finished it minutes before his class. Spongebob episodes show some real-life situations that are experienced by many adults.