monkey business basketball illusion gorilla
The sight of young girls in tee shirts tossing basketballs to one another isn't really much to look at, is it (shut up, pervs)? Guess again! The video after the jump contains two -- count 'em, TWO! -- visual illusions to be on the lookout for.

It's fun when there's magic on the internet. Who would've guessed that, among, say, balloons, gadgets, diapers, miniature ponies, cryptozoology, and mops, there would be room on YouTube to test your concentration skills. Godspeed and watch carefully!

By the way, if you think you know what this is, you don't quite.