Weenie Hut Jr's is seen in the episode "No Weenies Allowed." It is a restaurant intended for wimps and nerds, and has a menu suited for them. Next to Weenie Hut Jr's is a spoof called Super Weenie Hut Jr's. It is a highly developed version of Weenie Hut Jr's. Across the road of Weenie Hut Jr's is the Salty Spitoon.
The only known members are Patrick and two nerds who resemble wieners and talk about random stuff in a nerdy way and fashion.
As the two nerdy fish said, there are many different days of the week allocated to different events in the place. These days include:
Double Weenie Wednesday (moved to Friday)
Mega Weenie Monday (moved to Sunday)
Monster Weenie Monday (exclusively at Super Weenie Hut Jr.'s)
The exterior of the place is pink, girly, kid-friendly, and in the shape of a cupcake with icing on top. Also featured on the exterior is a weenie and some stars on the bottom of the cupcake exterior.
The interior has a long bar and bar stools. Over the bar is a weenie-shaped sign with the business name on it. Weenie Hut Jr's has a weenie robot who serves customers and tries to help them with their problems, and yet he describes himself as "...a robot, not a miracle-worker." It can identify if someone is a weenie or not.
Weenie Hut General is a hospital seen at the end of "No Weenies Allowed." SpongeBob is finally let into the Salty Spitoon. Upon his entrance, he slips on an ice cube and is rushed to the hospital by Sandy. When SpongeBob tells the doctor what happened and that he got covered in "boo-boos," the doctor recommends Weenie Hut General.
Super Weenie Hut Jr's first appears in "No Weenies Allowed." After SpongeBob fails the toughness test to get into the Salty Spitoon, Reg points to Super Weenie Hut Jr's, suggesting that SpongeBob go there instead of the Salty Spitoon. SpongeBob thinks that he is pointing to Weenie Hut Jr's, but Reg corrects him. SpongeBob then goes to Weenie Hut Jr's instead.
Later, while Patrick and the nerds are talking, one of said nerds mentions that Super Weenie Hut Jr's has a Mega Weenie Monday. The other nerd corrects him, saying that it is actually Monster Weenie Monday.
It later appears in The Yellow Avenger. It appears next to Weenie Hut Jr's in the restaurant district area.
In "Stuck in the Wringer," Patrick takes SpongeBob to Super Weenie Hut Jr's for some ice cream to cheer him up after gets stuck in his wringer. SpongeBob becomes even sadder when he discovers that the wringer is blocking his throat from consuming the ice cream.
In Creature from the Krusty Krab, a Weenie Hut Jr's world headquarters appears as a part of the level "Revenge of the Giant Plankton Monster" in the console versions.
The original Weenie Hut is the only one not to appear in "No Weenies Allowed."
Weenie Hut General is the only place of the franchise not to not have its interior revealed and the only non-restaurant place of the franchise.