The term "the kiss of life" refers to the action of performing mouth-to-mouth resuscitation in an attempt to revive someone who has stopped breathing. Synonyms for this phrase include "mouth-to-mouth resuscitation," "CPR," and "cardiopulmonary resuscitation." Other similar phrases include "life support," "urgent care," and "emergency response." While the term "the kiss of life" is often used humorously or ironically, the act of performing mouth-to-mouth resuscitation is a serious and potentially life-saving action. Knowing the proper techniques and being trained in CPR can make the difference between life and death in an emergency situation.