A mysterious pastime involving apples. People are invited to a secret location. Once all participants have arrived, shut and lock the doors, close the windows, pull the black-out curtains and turn off the lights. You then proceed to pummel your friends whilst shouting "APPLE FIGHT BITCHES!" If apples are not making a "pew pew pew" sound, you're doing it wrong. For our American counterparts, apples may say "pew, pew, pew, 'merica"
"I showed up at this party and next thing I knew people were pummeling me with apples! WTF?"
"That was an apple fight dude"