Every year, millions of people don ginger wigs, green jackets and shamrock-adorned top hats.
They then crowd into bars across the world, where they down pints of Guinness from as early as 9 or 10am.
They do so to mark St Patrick’s Day , an annual event that celebrates the heritage and culture of the Irish.
On the day, many will conveniently remember that their great-great-great-great-grandparents moved over from Ireland centuries ago.
Others, meanwhile, will try to impress fellow revellers by putting on a fake Irish accent and drunkenly wishing them: “Top o’ the mornin’ to ya.”