As well as being a highly successful company within the porn industry, Brazzers has become an internet picture meme. The idea is simple and easy enough to popularize - take any of a million several hundred billion pre-existing stills or gifs on the internet which might suggest sexuality when seen out of context, and stick the Brazzers logo on it.
The meme seems to have originated from this image, taken from the popular American kids/early teenage Television show iCarly. The photo was instantly popular across social networking sites, forums, and image DBs, and the meme spread in the same way most memes tend to - imitation. The most popular tendency and target of the meme is to focus children's anime, especially from the 1990s, such as Spongebob Squarepants, Pokémon, and all those Disney movies of the 1980s and 1990s (as if they needed any help in pointing out their litterings of sexual innuendo).
Here's a bit further reading. I would post more examples, but this meme tends to snowball into NSFW material pretty quickly. The internet is a dark and scary place, people, and I would strongly caution anyone against curiosity.