This is from the King Neptune episode in 2000:
King Neptune: The roual fry cook must wear...red underwear!
(SB pulls out red underwear)
King Neptune: No, blue!
(SB pulls out blue undserwear)
King Neptune: Ooohh!!
Patrick: He is the new royal fry cook, and you--
King Neptune: (scorches Patrick with his finger)
Patrick: Ouch.
This is from "Naughty Nautical Neighbors"
Squidward: Ooh, my back! Ah! I threw out my back!
SpongeBob: This is my chance! Here I come, Squidward!
Squidward: No, no, noooo!!!
[CRASH]
Squidward: Oh-ho, I'm ruined...I'm rui...I...I feel great! Thanks, SpongeBob, you're a real friend.
SpongeBob: (eyes get all big, trancelike): FRIEND.
Squidward: No no no no! I didn't mean that.
This is also from "Naughty Nautical Neighbors"
SpongeBob: (playing bassinet horribly): Squidward is my best friend in the world....Squidward is my best friend in the sea....Squidward--
Patrick: Likes Patrick more than SpongeBob
SpongeBob: And Patrick is a dirty, lousy, rotten, friend stealer!!! (breaks bassinet) Um...I can fix this.