Here's the Czech, have fun: Můžu jíst sklo, nebolí mě to.

Edit: Oooh I should've looked around more on that archived page for the actual list (https://web.archive.org/web/20040204003447/http://hcs.harvar...), there are two Czech ones there! "Můžu jíst sklo; to mi neškodí" (I can eat glass, it doesn't harm me - TIL the verb "škodit") and "Můžu jíst sklo, to mi nic neudelá" (I can eat glass, it does nothing to me).