Once you've loaded up the game and you have friends round (or just try it with 2 wii remotes) go on multiplayer mode and select restaurant level(doesn't matter what the rules are except for the level).When the level is started go on to the balcony where the only sniper is on the level (if you don't know how to get onto the balcony go out side and keep looking around until you find an arch where a door is supposed to be, go through the arch and up the stairs to the balcony).now some people might hav found a way to jump off the balcony and onto the ground below but if you jump slightly to right you will land in the weird grass patch an be standing in mid air.

Now, this is where your friend or 2nd remote comes in, whilst in glitch-world get your friend to jump in as well. Then start shooting at each other until one of you dies. after the death you will hear this reall hilarious death noise that the person makes.