When I was a young lad, maybe 7 or 8, my parents had a St. Patrick's day party one year. It was also a costume party. My mom, bless her ever-loving Italian heart, dressed as a flapper and wore a sign over head that said ERIN GO BRAGH on the back and ANITA GO BRALESS on the front.
I had never heard the expression before but to this day, every time I hear the expression I think of that costume and smile.
Happy St. Patty's day!