SpongeBob SquarePants, Season 10

[SpongeBob is hiding in a dark cave where is body is morphed into an owl and starts singing.]

SpongeBob:
♪Who, who, who, who, who, who, who, who? Who... am I?

[jumps to a cave mirror and morphs into a question mark] Who am I? [morphs into a pineapple] I just can't remember.

[morphs into Pearl] Who am I? [imitates Pearl] I just can't recall.

[morphs into a handsome man and imitates him] Who am I to sing this somber song? When you've got six heads, there's something wrong.

[morphs into five of his friends] Who am I? [imitates his friends] Please tell me. [normal] Who am I? [imitates his friends] Do you know me?

[morphs into a female fish] My name could be Clementine [morphs into Fred] or it could be Freddie.

[morphs into two SpongeBobs] I just can't recognize myself. I don't know if I'm ready. [imitating his friends in a barber shop quintet] I'm ready!

[normal] Who am I? [morphs into a male fish] I have a right to know. [normal] Who am I? Am I friend... [morphs into Plankton and imitates him] or foe?

[normal] I have so many features. It makes it hard to tell. I don't know what my first name is. But my faces ring a bell.

[imitates Squidward] Who am I? [bell dings] [imitates Mr. Krabs] Who am I? [bell dings] [imitates Patrick] Who am I? [bell dings] [imitates Plankton] Who am I? [bell dings] [normal] Who am I? [phone rings] Hello?♪

Caller:
Hello. To whom am I speaking?

SpongeBob:
♪I... don't...! Know...♪

[As SpongeBob's song ends, his face shrivels.]