Two By Four

SpongeBob and Patrick get replaced, or so they think.

Plot
SpongeBob and Patrick meet another sponge and starfish named Bob and Tap. Soon SpongeBob and Patrick feel like they've been replaced by them and soon everyone looks for them, except Squidward who tries to convince everyone in Bikini Bottom to keep Bob and Tap as their replacements.

Triva/Goofs

 * This episode is short because its pairing, "Shadow", is long.