WATCH: Did Bill Hader REALLY convince someone he was Irish with this awful accent?

The comedian told O’Brien that after his trip he would just walk about New York pretending to be a Radio Producer from Dublin, just to amuse himself.

We’ve heard them all at this stage - Courteney Cox, Harry Styles, Billy Piper and now Bill Hader -celebrities aiming to nail the Irish accent.

Bill Hader appeared on Conan O'Brien's late night chat show this week, and talked about his time in Ireland promoting his new movie Trainwreck.