Blackened Sponge SpongeBob SquarePants : Season 5 Episode 24

While brushing his teeth, SpongeBob accidentally gets a black eye. Too embarrassed to tell anyone the truth behind his injury, SpongeBob makes up a tale about a fight with a thug. When at the Krusty Krab, SpongeBob learns the bully in his story really exists after it arrives, which makes SpongeBob tell the truth.