How does a physicist exercise?

By pumping ion!

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Pump Jokes More Pump Jokes

What do they do in West Virginia for Halloween?

Pump Kin

What did the pumpkin say after waking up his family?

Awaken, my pump-

Ion Jokes More Ion Jokes

What do you call an ion that also raps?

Fluoride, duh.

What's the difference between a seal and a sea lion?

An ion!