This Irish drinking hat might be the only piece of costume you need this St. Patrick's Day. The holiday is well known as a binge drinking day and this hat will help you be as efficient as possible while consuming alcohol.
In Ireland, it is customary to order your next drink when your current drink is about half way finished. The idea is based on drinking Guinness, because the dark beer usually needs a few minutes to settle before its taste is right. Ordering your second beer when your first is only partially finished ensures that there won't be any lag time between beers.
This Irish drinking hat gives you access to two beers at once, which also should reduce any lag time. The buckle on the front of the hat also adds to the Irish look.