The uncensored artwork can be seen here. If more content is released, it will be updated - https://archive.org/details/behind-closed-doors-sponge-bob

When the "my friend's dad works at Nintendo" kid is not bullshitting you.

IDK what's more incredible: the content of this book or the fact that no one was even looking for it and it just suddenly appeared.

This shouldn't be treated like there's some sort of deeper meaning. It's incredibly common for animators to do stuff like this just for the laughs.

one of these photos are probably the secret embarrassing photo of SpongeBob from the Christmas party we never got to see

“How do you make it sing like that?”
“It only sings around you, squidward.”

This interaction alone invokes a primordial fear into me like nothing else

Holy cow, this is shockingly eye-opening to Nickelodeon's work culture. I remember one time Seth McFarlane said something along the lines of "You can tell when the writers are getting sick of working, because there'll be an exponential increase in poo and pee jokes." I can only say that this is similar to that

The real freak bob

Adult versions of spongebob always seemed so strange a concept, kinda reminds me of old school YouTube poops.

Nickelodeon would definitely prefer the Sailor mouth audio being leaked instead of the storyboard jams

I remember hearing that there was an entire vault at Disney where they kept the racy and lewd doodles the artists did of the Disney characters. Whether it actually exists or not, you know those artists absolutely made doodles like that. This is just more proof that artists are gonna draw whatever they want to draw, and not all of it will be in keeping with the, er, theme of the show or movie lol

Let’s just take a moment to appreciate his ability to talk about the censored pictures without laughing

This is actually fairly common for various kids cartoons. Maybe not specifically a “Behind Closed Doors” book compilation of this crude artwork, but just this type of media being drawn by the official crew all the same.

They seem to be more popular through the practice of a “storyboard jam”, a game where a storyboard is started, passed around and is added to by different members of the production crew of a cartoon, often resulting in rather lewd or offensive depictions. Production crews are said to have often used storyboard jams to relieve anger and tension while working on a project.

Various examples of these jams that are available on the internet is the infamous Rugrats Storyboard Jam as well as the Phineas and Ferb Storyboard Jam (though this one is a lot more tame in comparison to the others).

This is hands down one of the biggest lost media discoveries related to Spongebob in existence.

As someone who’s studying animation it can get really frustrating. Upon making some of my final pieces I would often just grab a scrap piece of paper and draw the characters vomiting bc I felt so sick from staring at screens and blank white paper all day. I would get so tired I would half heartedly doodle characters clawing their eyes out. If my hand hurt really bad I would just draw the characters with big naked butts because I thought it was funny and helped me lighten up a little. It was weird, but a small dumb thing to get the frustration out. I don’t think the offensive things are the best but slapping male genitals or having them do stupid dumb sexual favors for each other with stupid eyes is so accurate to my experience of just getting your frustrations out as an artist.

Today, I learned that dick jokes and toilet humor are considered to be "dark".

So now we basically have the SpongeBob equivalent of the Rugrats Storyboard Jam? This is legendary.

Tom Kenny himself confirmed the existence of these types of drawings on a panel he did with the cast. I believe it was the same panel where he talked about sailor mouth but I could be wrong.

“Dude, put that thing away. There are, like… CHILDREN here!”

I love how you're describing all this disgusting shit in such a polite way