The hotdog shop is a restaurant which only appears in the episode "Picture Day."
The hotdog shop is brown and has a green roof, a huge hotdog on the roof, and few tables outside.
In the episode, SpongeBob hides on the roof of this building from teenagers. He disguises himself as a slice of cheese. He then comes down just to be sprayed by Ketchup by an old man who kept on missing his hot dog.