I'm sure you've seen those terrible motivational posters that were a big craze for a while.
You know the ones: they feature an athlete silhouetted against a sunset, crossing a finish line and celebrating, or a gazelle leaping across an African plain... Below the picture a strong line focuses on a motivational topic like 'Leadership' or 'Success'. And below that, advice on how to 'be better'.
It's not really surprising that many people found these posters the perfect material to rip off. Demotivational posters (often called Demotivators or MotiFakes) are just that - an image, together with funny copy mocking real motivational posters. The sarcastic messages cover everything from work issues to getting a girlfriend and gaming references.
Check out Macrofolio and the burning biscuit for some great posters.
This meme continues to spread and evolve. Posters cover just about every conceivable topic - and some are just plain strange. Here's a site where you can make your own.