I'm SpongeBob!

'I'm SpongeBob!' — the sponge introducing himself with the unearned confidence of a man who has never once read a room. It's a perfect entrance sound: play it when arriving anywhere, volunteering for anything, or claiming an identity nobody questioned. The sheer enthusiasm is the joke, and it never runs out. Who lives in a pineapple indeed.

Origin: SpongeBob's enthusiastic self-introduction from the series.