It's the letter of the rule over the logic of it. They'll probably make you remove it as well, just so they don't need to argue with everybody else if each piercing is a hazard or not.

Besides, piercings in teh tongue means a good week of soups and liquid foods. And icecream too if you're lucky.

Mmm, ice cream. And soup is good too. I've lived off just soup for a week because it was tasty and easy to make.

I figure if they missed me coming back from lunch with my necklace on (the outside) for an hour until I realized it, and missed random ear piercings I forgot to take out, tongue will be easy. And I will seriously say "You might stick your tongue in the machine, but really, I don't plan on it." -is a defiant bastard-