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.
An average man can ejaculate for at-least four to five times within a period of one hour. As the number of time grows, the quantity and quality of sperm ejaculated reduces. With every ejaculation, the quantity reduces and the sperm becomes more and more watery.