Best science pun you know (for shirts)?

I kinda need really good ideas. I don't care if they already have it in shirt prints or not. So give me your best shot please :D

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Picklebobble2 · 56-60, M

Bacteria is the only culture some people have.

Nickel and Neon share the same favourite number. Ni + Ne

Is someone who steals energy a Joule thief

Are Chemists in their element ?