SpongeBob SquarePants is a television show that is extremely popular around the world and has earned more than $8 billion in merchandising revenue for Nickelodeon. The cartoon features a wide variety of characters that live in the underwater city of Bikini Bottom. One of these characters is named Squidward Tentacles. The show is made for kids, but in 2004 an urban legend emerged surrounding a lost episode of the show that is said to display Squidwards Suicide.

Red Mist is really a controversial real-life bootleg tape featuring an unaired episode of Spongebob Squarepants. Much like the long-lost but recently found "Suicide Mouse" tape, Red Mist was purportedly made by the now imprisoned Scottish animator with the series who that will pass the tape off since the season 4 premiere episode and featured the death of Squidward.

Description in the tape

Red Mist starts with Squidward preparing to practice his clarinet as part of his room as Spongebob and Patrick play merrily outside. Squidward wraps his mouth around the clarinet which is only able to play one note just before being interrupted by a person knocking about the door. He walks down and opens the door and discovers than a traveling salesman are at his door.

http://theunexplainedmysteries.com/Red-Mist-Urban-Legend.html