Ans. A bachelor party, also referred to as a stag party, stag night, or stag do, a bull’s party, or a buck’s party or buck’s night, is a celebration held for a man just before his wedding to honor his “last night of freedom” or to spend time with his male friends, who are frequently at his wedding reception afterward. The best man or other groomsmen mates often organize a bachelor party, possibly with the help of a bachelor party organizing service.