Vote how much you like the jokes below and submit your own if you like. Your joke will be added to the form tomorrow.
The person who submitted the joke with the most votes will receive a copy of the book Molecules that Changed the World.
We will decide on September 3rd.
Thank you for your jokes and submissions. We will announce the winner of the book tomorrow, September 5th.
Get inspired by last year's jokes, but do not copy them, please.
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