Bachelor Party is a 1984 comedy film directed by Neal Israel, written by Israel and Pat Proft, and starring Tom Hanks, Adrian Zmed, William Tepper and Tawny Kitaen. The film chronicles a bachelor party being thrown by a group of friends for their friend Rick Gassko Hanks on the eve of his wedding and whether or not he can resist the temptation of being unfaithful to his fiance Debbie Kitaen.
Partyanimal Rick Gassko Tom Hanks, who makes his living as a school bus driver, decides to finally settle down and marry his girlfriend Debbie Thompson Tawny Kitaen. After gathering his buddies to give them the news, his shocked friends led by Adrian Zmed decide to throw him the bachelor party to end all bachelor parties. The brides wealthy, conservative parents are not at all happy with her decision and her father decides to enlist the help of Debbies exboyfriend Cole Whittier Robert Prescott to break them up and win her back.While Debbie worries and goes off to her bridal shower thrown by her friends, Rick heads off to the bachelor party and promises to remain faithful. Both parties start off on the wrong foot thanks to a little sabotage by Cole. As the bachelor party starts to heat up, Debbie and the girls decide to get even with Rick and his friends by having a party of their own. Both parties eventually collide leading to Debbie accusing Rick of infidelity. ........
Source: Wikipedia