What is bachelor night?

A bachelor night, also known as a stag night or stag do (in British English), is a party or celebration held for a man the night before his wedding. It's traditionally a male-only event where the groom and his close friends and family engage in various activities, often involving socializing, drinking alcohol, and sometimes more adventurous or boisterous pursuits. The specific activities vary widely depending on the groom's personality and preferences.