On October 20th, Yahoo News reported that a study conducted by Boise State University revealed that most women are bisexual. The reasons aren’t that far-fetched. Chicks are more in tune with each other, more emotional, more vulnerable. When they get drunk, it’s only natural for them to be intimate with each other because they’re so comfortable with the other person. For us guys, it’s the greatest show on Earth. What’s better than drunk girls kissing? How about drunk girls kissing in sexy, revealing Halloween costumes? Yeah, we thought so, too. Check ’em out below.