Patrick Covers Up is an episode of The Silly Adventures of Patrick Star.
Transcript[]
(Patrick enters a restaurant.)
Waiter: Excuse me, sir, but may I point out this sign?
(The waiter points to a sign saying "No shirt, no shoes, no service".)
Patrick: Yes, you may point it out.
Waiter: Then read it!
Patrick: (reads the sign) What a coincidence! I'm wearing neither a shirt nor shoes!
Waiter: So therefore, we cannot serve you.
Patrick: What? That's a dumb rule!
Waiter: We apologize for not wanting our patrons' stank feet walking on our floor and their nasty old bellies flopping around while people are trying to eat.
Patrick: You're not a very cordial waiter.
Waiter: Do you even know what "cordial" means?
Patrick: Uhh...
(Patrick runs to his rock and runs back to the restaurant wearing a shirt and shoes.)
Patrick: Ta-da!
Waiter: Sorry, but we just closed.
(The waiter takes off his shirt and shoes and swims off into the horizon.)
Patrick: Well, bar-
(What a twist!)