Basically, this is a parody of a video game called Mortal Kombat. Two opponents square off, much like you see these two kitties doing. Just before the match begins the word "FIGHT!" appears. The game is quite gruesome. It originally came out in the late 1980's,and was way too popular here in the USA. It made me ill to even watch it, and I was 19 at the time I played it for the first (and only) time. You win the game by eliminating your opponent--in horrifying ways. Yuk! I just found the meme funny because we've all seen cats square off before they get into a fight.
