It is a small, orange trailer with a single door and two windows. It is a bit broken down at parts.
Role in episode
Nat leaves his trailer in order to get some chum at the Chum Bucket. He notices a large hole near his trailer that says "Shortcut 2 Chum Bucket" and he happily takes it. However, Nat ends up at the Krusty Krab with SpongeBob and Mr. Krabs greeting him.