Writing in the Accident Analysis and Prevention journal, a team from Tampere Institute of Technology reveals the results of a study in which 6000 people were asked if they had actually had any kind of accident - or had nearly had an accident - while using a mobile.
  yes. they are called wet dreams. when a man sleeps hes usually dreams about sex, so when you have sex you ejaculate in there dream they are having sex.
Other men will make it to insertion and then ejaculate within seconds. Yet other men can go for hours and ejaculate at will. Pace, position, experience and the stimulation of the situation will all determine how long a man can maintain his erection and control his ejaculation.