Grouchy Snailitis is a snail disease caused by a splinter. It appears in the episode "Once Bitten" and the books Mistaken Identity and Attack of the Zombies! It is an infection that causes mild symptoms similar to the real-life rabies virus caused by extreme pain. Supposedly, after Gary bit Squidward, Grouchy Snailitis appears to mutate even further into Mad Snail Disease.
It is a highly contagious disease which causes the same symptoms but in other sea creatures. After Gary goes on a rampage and bites several other Bikini Bottomites, he supposedly started an "outbreak" of MSD and the "infected" began rampaging across the Bikini Bottom.
Description[]
It is a disease caused by a splinter pricking part of a snail's skin. It can be diagnosed by an S.D.E. or S.E. expert, such as Dr. Gill Gilliam. It seems that it is further caused when snails are in extreme pain. Symptoms are rabies-like, the infected snail becomes full of rage and foams out of the mouth. The veins in their eyes bulge and they react violently to touch.
Role in episode[]
Gary's splinter which causes Grouchy Snailitis
Gary contracts the disease, causing a rampage of him around town, biting people with a supposed "mad snail disease." It is revealed later in the episode that Gary only has Grouchy Snailitis. With the hoax of MSD revealed, order returns to Bikini Bottom.
Contractors[]
It has only been identified in Gary. It was diagnosed by Dr. Gill Gilliam, SDE, SE. It can only infect snails and is not virally contagious.