Team Fortress 2 is Valve's class based multiplayer shooter first released in 2007, and the nom comes from the Heavy, its large minigun carrying class, when he eats a health item such as the Sandvich. The exaggerated eating noises became a running joke in the community, clipped from gameplay and reused in machinima, Garry's Mod videos and meme edits. A single isolated bite proved especially useful because it is short, recognisable to players, and funny even out of context, so it spread as a standalone soundboard clip.