Myth or Fact?
Coffee can sober a drunk person up.
A cold shower can sober a drunk person up.
While a cup of coffee or a cold shower might make the person more awake or even seem more alert, the alcohol is already in the body. These things won't make them any less drunk. The only way for a person who's been drinking to sober up is to allow the alcohol to metabolize. The body takes an hour per drink to do that. Depending on how much a person has had to drink will determine how long they need to sober up.
So the only way a drunk person can sober up is TIME. The less someone drinks, the less time it will take to sober up. If you choose to drink, consider staying in the blue zone by drinking about 1 drink an hour. Allow the body time to metabolize the drinks while avoiding the drunken danger zone.