The Marseille Way

If you arrive at your friends door at 3am, ring the door bell once, and they don't respond immediately, start yelling at the top of your voice to wake up your friend. It really helps if you have 2 or 3 of you together. This has the effect of waking up everyone on the street. They will start yelling back at you. You should yell back at them. The rising noise will eventually wake up your friend and they will late you in and all will return to quiet.