Guinness

"Oirish" is a term coined by amused Irish natives to describe anything associated with the tourist cult of Ireland that paints it as the land of shamrocks, blarney stones, leprechauns, and Guinness. It can also be used to describe anyone who despite many generations in the new world and questionable Irish ancestry constantly proclaims themselves to be Irish

It's great little costume he has there you'd almost think the oirish twit was auditioning for a part on Ballykissangel. > American Tourist : Put a Shamrock in Me Guinness. > Bartender : ::Tosser::