A big THANK YOU to everyone who participated, all three of you. Heh. We had some good guesses, from an everlasting gobstopper to chicken sperm(?). But no one guessed correctly. One respondent came close guessing “molecule,” and yes, it is a molecule, but what kind of molecule???
And now for the big reveal: The aforementioned spinning .gif is none other than a molecule of Phencyclidine, otherwise known as PCP. It caught our eye while roaming the Web two nights ago and prompted us to add a pop quiz feature to our repertoire. FYI, for those who guess correctly, there will be prizes! So stay tuned for the next puzzler, and stay away from the PCP.