Now that the Large Hadron Collider has been switched on and the world remains more or less intact, Hadron-mania has gripped the Internet. LHC enthusiasts check the status of Earth's destruction, view Collider porn, and, of course, commemorate the event itself with clever t-shirts. If you're looking for the perfect gift for the particle physicist in your life, consider one of these tees, which play largely on irrational fears of the LHC and the obvious implications of a certain typographical error.

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