Bar escape

  Dream up a situation that a guy went to a bar late night on a rainy day. As it was raining heavily outside, there are no customers in the bar except that guy. After fully drunk-ed he went to the restroom. Unfortunately, bar employee thought that the guy went out. So, he locked the bar and went. Now you need to help that guy to escape from the bar. This could be done only with your brilliance. As you are the possess good decision making capabilities, surely you will find the necessary objects to solve the puzzles and escape the guy.