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This is a list of all of bumpers that aired on Nickelodeon based on Hey Arnold!
|Number||Bumper name||Bumper plot||First aired||Last aired||
The bumper starts off with Helga standing next to a Nickelodeon ball. Harold then kicks it, then Gerald twirls it on his finger like a basketball, then he throws it to Arnold, who then hits it with a baseball bat. The ball hits Helga in the head, and bounces off of her head, and smashes into glass (breaking the fourth wall). Everybody (including Phoebe, Sid and Iggy) runs away, only leaving Arnold, who hides the baseball bat behind his back and smiles, pretending like it didn't involve him.