Protect your secrets...

That's right! You too can protect the valuable secrets in your head with the new Tin Foil hat. Go forth, find a trustworthy Engineer, and get yourself one crafted today!

Every engineer knows that in order to achieve true greatness, it is imperative to always keep a clear, unclouded mind and to protect one's secrets from those who would seek to steal or plagiarize the radical new designs of a hard-working genius. The Tinfoil Hat is the logical result of this profound insight, combining tinfoil's powerful mental shielding properties with the excellent counter-hexing effect of troll tears and the outstanding mind-focus powers of one of Azeroth's most precious gems.

Read more about it right over here I mean not here WHERE IS MY TIN FOIL HAT!

(Watch out, THEY ARE AFTER YOU)
(THEY WANT YOU TO BELIEVE IT IS AN APRIL FOOLS JOKE)
(I KNOW THE TRUTH)
(THE TRUTH IS IT IS REAL)
(THEY ARE OUT TO GET YOU)
(YOUR ARMORY PROFILE, THEY USE)
(TO SEE YOUR PROGRESS)
(FOR THEY, BLIZZARD, IS TOTALLY OUT TO NERF YOU)
(FEAR NOT THE TRUTH, TIN FOIL WILL SET YOU FREE)
(I MUST RUN BEFORE THEY GET ME)
(TIN... foil...)