Iran's Penal Code prescribes execution by stoning. It even dictates that the stones are large enough to cause pain, but not so large as to kill the victim immediately. Article 102 of the Penal Code states that men should be buried up to their waists and women up to their breasts for the purpose of execution by stoning. Article 104 states, with reference to the penalty for adultery, that the stones used should "not be large enough to kill the person by one or two strikes; nor should they be so small that they could not be defined as stones.-- from Amnesty International Iran: Death by Stoning, a Grotesque and Unacceptable Reality.
But we should always look on the bright side of life: