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Why do biologists look forward to casual Fridays?

What did the catalyst say at the meeting?

Why did the mitochondria start a business?

How do astronomers organize a party?

Why did the lab rat start a podcast?

What's a physicist's favorite snack at the movies?

Why did the electron refuse to fight the proton?

What did the thermometer say to the graduated cylinder?

Why was the amoeba so good at math?

What did the photon say when asked if it needed luggage?