the trick is in the translucent quality of the glasses: mirror reflections at certain angles on the outside surface cup, and the precision with which he scoops a ball back from the mirrors before the trick is revealed. The ball appeared to disappear because he, in moving his other glasses, faintly turned the cup, removing the ball from view, presenting the mirror outward, as if the ball had never been there.
BR likes it that way. He wants to let it grow, and develop, adding more and more, consuming memes, cool ideas, meta jokes, and everything else. His avatar is like a black hole of cool, the cool density went critical and now instead of spreading cool it sucks in all the cool around it. Mostly it sucks the cool out of BR's posts, and thank God for that. We mortals would not be able to deal with posts of such cool magnitude were they not deprived of the majority of their cool before getting posted.
If you ever watched Bleach and learned what Zaraki Kenpachi's eye-patch is for, it's basically the same deal.
By the way, I just came up with the best of my puns yet.
Remember that we are not just dudes of Snafu, we are dudes of Spam.
Legend has it that the original image sprang Athena-like from the mind of a fevered fanfiction writer. Ever since, certain individuals have added to it when the cosmos deemed the time to be right: Pinkie the pies; sam4books the pony; Alopunk the sparkles; Zoul the animation. I myself added the smugface and looped the animation.