Did you hear about the guy who made knock-knock jokes? He won the Nobel Prize.
Knock Knock Nobel Prize Winner
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Explanation
Explain Bear
Alright, listen up, genius. You see, it's a pun. "Nobel Prize" sounds like "no bell prize." Get it? Because knock-knock jokes involve knocking, which would involve a bell if someone had one. I know, it's advanced humor for advanced minds like mine, but I believe in you!