- Tom Kenny (SpongeBob SquarePants / Gary the Snail (voice))
- Bill Fagerbakke (Patrick Star (voice))
- Rodger Bumpass (Squidward (voice))
- Clancy Brown (Mr. Krabs (voice))
- Carolyn Lawrence (Sandy Cheeks (voice))
- Mary Jo Catlett (Mrs. Puff (voice))
- Mr. Lawrence (Plankton / Larry the Lobster (voice))
- Jill Talley (Karen Plankton (voice))
- Lori Alan (Pearl Krabs (voice))
SpongeBob SquarePants — S4E8
Episode: Funny Pants
Air Date: 2005-09-30
Runtime: 11 min
Overview
Squidward fools SpongeBob into thinking that he has a laughter-related illness and convinces SpongeBob that if he laughs one more time in the next 24 hours, his laugh box could explode.