It’s no Paddy’s Pub, but for 20 minutes on Saturday night, the patrons of The 88 Club piano bar in Back Bay cheered on the whiskey-pouring and piano-playing skills of actor Charlie Day , famously from longtime FX show It’s Always Sunny in Philadelphia .

Day spent the weekend in Boston promoting Four Walls Whiskey, the whiskey brand owned by him and other fellow Always Sunny actors Rob Mac and Glenn Howerton.

The Rhode Island native bar-hopped from Thursday to Saturday, pouring shots of the Irish whiskey and American rye blended liquor to patrons, and even pitched at Fenway Park. Day also gave a wide-ranging interview to Boston.com about his New England upbringing, which included growing up near Rhody beaches and attending Merrimack College.

But at his last stop, he provided

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