Watch the episode "Jellyfish Jam" on the SpongeBob SquarePants television series.

When Squidward begins to play his clarinet, very badly, mind you, the jellyfish in SpongeBob's house start getting angry because of the noise. SpongeBob calls to Squidward "Squidward, could you play your clarinet a little bit better? I don't think the jellyfish like it." The scene switches to Squidward, and he is in his PJ's.

He says he will, and it switches back to SB.

Then it goes back to Squidward, and he is now in his brown shirt.

It switches again to SB then to Squidward again, and Squidward's in his PJ's again! What a quick change.