Re: Groomsmen Oh, right. Usually the night before a wedding the groom and groomsmen do a stag night or bachelor party and the bride and bridesmaids do a hen's night. It's "supposed" to be a last wild night of freedom and you see them in movies and tv with a lot of drinking and strippers, but a lot of the time it's just a way to celebrate with your friends and pass time so you're not stressing out too much.