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.
But ejaculation does not always occur with orgasm. Some men use tantra, a kind of yoga where sexuality is heightened to get closer to enlightenment, to train themselves to experience continual peaks of pleasure (orgasm) without ejaculating, thereby apparently eliminating the need for a refractory period.