Say hello and Happy Halloween to the grossest-looking thing you will ever enjoy drinking. This Booger Beer Cocktail is made with Guinness, marshmallow cream, and yes, you're reading that right - peas. I'm aware this sounds like the worst idea anyone has ever had, putting peas in a drink when you're just trying to enjoy your holiday with as few vegetables as possible, but adding sugar to them makes the overall taste surprisingly good - not to mention the fact that sticking them to the rim increases the yuck-factor immensely. If you're planning a Halloween party this year with more tricks than treats, then this is one drink you absolutely must have!