These are the adult jokes in Disney Channel shows you definitely missed.

Prepare for a super gross walk down memory lane. Welcome to WatchMojo, and today we’re counting down our picks for the 10 Hidden Jokes in Nickelodeon Shows That Will Ruin Your Childhood. For this list, we’re looking at inappropriate jokes in both animated and live-action shows aired on Nickelodeon.

Rewatching these TV shows, we finally noticed these foreshadowing details.

To catch everything, these are TV shows that you have to watch twice. We’ll be going over the television shows that necessitate at least two viewings to fully appreciate everything in them. Also, if you haven’t seen the shows we’re talking about at least once, there could be spoilers ahead. WatchMojo ranks the TV shows you have to watch twice. Which TV show did you have to watch twice? Let us know in the comments!

The devil is in the detail and the comedy is in the background. For this list, we’ll be looking at the best intentional jokes left or humorous happenings in scene backgrounds featured in television shows.

These TV callbacks will make longtime viewers say, "Hey, I understood that reference." For this list, we’ll be looking at the classic pulls and most well-executed references in TV shows.

With how long "South Park" has been on the air, it has made fun of quite a lot of other TV shows. For this list, we’ll be looking at instances where this animated satire took aim at other shows.

Wow, we should NOT have been watching these shows as kids. For this list, we’ll be looking at the most notable television series from our youth with the inappropriate jokes that went right over our heads, as well as shows that still give us nightmares to this day.

The shows with the best easter eggs always have us on the lookout.

The shows with the best running gags never get old.

If you think everyone needs to choose between these two comic book powerhouses, these are actors who had roles in both Marvel and DC animated shows. We’re looking at actors who have appeared in animated television shows based on Marvel and DC properties. The big screen heroes may get all the glory, but these voice actors prove that small screen characters can be just as engrossing. WatchMojo ranks the actors who had roles in both Marvel and DC animated shows. Are there any actors we missed? Let us know in the comments!

Some underrated teen shows deserve to sit at the cool kids table.

Fans are still keeping our fingers crossed that these underrated 2000s TV shows find a second life.

Concealed by darkness, these are the scariest TV shows you didn’t know existed. We’re looking at horror television series which may have slipped under your radar. Sometimes the scariest horrors are the ones you don’t notice until it’s too late. WatchMojo ranks the scariest TV shows you didn’t know existed. What scary TV show do you think is underrated? Let us know in the comments!

We've heard that imitation is the sincerest form of flattery, but these copycat TV cartoons are ridiculous! We'll be ranking animated cartoon shows that were obviously inspired by earlier, successful series. Cartoons from all decades and genres will be considered, including copycats that originated from the same company as the cartoon being copied! WatchMojo ranks the most blatant copycat TV cartoons. Are there any copycats we missed? Let us know in the comments!