Condescending Wonka is, well, kind of rude. The thing is, he's usually right.
The basis of the meme is a picture that comes from 1971's "Willy Wonka and the Chocolate Factory" starring legendary funnyman Gene Wilder.
According to Know Your Meme, the theme was originally "Creepy Wonka" and it intended to be a platform for candy-based sexual puns. That didn't last long, apparently. Hmm...