“All your base are belong to us” (often shortened to “All Your Base”, “AYBABTU”, or simply “AYB”) is a broken English phrase that was central to an Internet phenomenon, or meme, in 2000-2002, with the spread of a Flash animation that depicted the slogan. The text is taken from the opening cut scene of the 1991 European Sega Mega Drive version of the video game Zero Wing, a Japanese video game by Toaplan which was poorly translated. It was popularized by the Something Awful message forums (wiki)