Apple and Samsung used to work together, and now they don't. There's a lot of speculation as to when the relationship began to sour, but it became apparent that they were on an all-out war when Apple chose to sic their lawyers onto the latter in a patent dispute.
Apple eventually won and Samsung ended up having to cough up a billion dollars afterward. Obviously Samsung wasn't happy with how the whole thing went down, but that was that. But while they may or may not take things to court, they did publish a pretty scathing ad criticizing the iPhone 5.
Apple fanboys didn't take too kindly on what Samsung did. It's a free country, but did Samsung go too far? A couple of them thought so, so they made their own parodies of the ad slamming Samsung's Galaxy S3 and pitting its features to that of the iPhone 5.
Check out Samsung's original ad in the gallery above, followed by two parodies of the ad that each make valid points of their own.