It started with the top image. An artist called Blue posted a drawing of a Black Widow and Hawkeye cover with the poses swapped. Blue then issued a challenge to other artists: replace the female characters in other comics with Hawkeye. These are just a few examples of what happened next.
Celebrities always seem to have something charming to say, but here's an example of how that's just simply not true. Samuel L. Jackson and Victoria Beckham seem to be working with a dull pair of scissors to cut through that awkward silence during the men's finals at Wimbledon. Line!