Billy and Bobby were walking to school one day. Billy pulled out an mp3 player. "What's that?" Bobby inquired. "Oh, just something to zone out the other kids." Billy responded. The next day, Billy and Bobby were walking to school. Billy rummaged through his backpack, and pulled out an mp4 player this time. "Woah! What's that?" Bobby inquired. "Oh, just a lil something to shut out the annoying kids at school." Billy responded. The next day, Bobby noticed Billy's backpack was particularly heavy looking. Billy rummaged through his backpack just outside the school, and pulled out an mp5 rifle. "Holy shit, dude! What the fuck is that for?" Bobby gasped. "Nice huh? This'll shut those fuckers up for good!" Billy replied.