Bill Murray, the Ireland-loving "Ghostbuster" legend, headed to the hurling All-Ireland semi-final before joining in on a sing-song in a Limerick City pub.

Murray treated unsuspecting locals to the impromptu sing-song at Charlie Malone's Bar on Wolfe Tone Street in Limerick City this week.

Bill Murray on a night out in my hometown pic.twitter.com/5XlfGshDPB

— Thomas Fleming (@DrTFleming) June 21, 2022

The bar's owner Paddy Kelly told the Limerick Leader “We were stunned to see him walk in. People were doing double-takes. There was a group of Spanish people who didn’t believe it was him. When Bill was gone I told them it genuinely was him and then they were crying and very upset that they didn’t get a picture with him."

He divulged that the star really enjoyed his pint of Kilkenny and stayed in the bar for about two hours. 

Kelly continued “He was so warm and friendly and was very funny - deadpan humour. He had a great chat with the musician Phil Aherne who was here. Phil is one of the main musicians who plays with Bono and Glen Hansard for the Christmas busking session in Dublin every year.”

Hollywood acting royalty Bill Murray pictured with Paddy Kelly, owner of Charlie Malone's Bar, and poet Mikey O'Doherty at the pub during his visit to Limerick@charliemalones #limerick #limerickcity #limerickedgeembrace #lovelimerick #ilovelimerick #limerickandproud pic.twitter.com/aRbQK2fDNG

— #LimerickandProud (@ilovelimerick) June 21, 2022

Inevitably, a sing-song kicked off and Murray soon was singing along with the locals.

"There were a few guitar players and a sing-song started. He thoroughly enjoyed himself. He gave a wonderful rendition of 'The Star of the County Down'. It was some craic!” Kelly said.

That same day, two Irish women happened upon Murray on a street in Limerick and were shocked to discover that the lad who had "the head off Bill Murray" was none other than the Oscar winner himself.

Was waiting with Anna for a lift on O’Connell st in Limerick last night and said to her “that fella across the road is the head off Bill Murray” and guess who it feckin was lads pic.twitter.com/6FwJKej3rc

— Siabh (@siabhbm) June 21, 2022

Earlier, on Saturday, Murray attended the All-Ireland hurling quarter-final clash between Cork and Galway at Semple Stadium in Thurles in Co Tipperary with Irish businessman JP McManus.

McManus was photographed outlining the rules of hurling to the legendary Hollywood star.

Actor Bill Murray is at the hurling in Thurles!

📸@sportsfile pic.twitter.com/56mnCVuW64

— Sky Sports GAA (@SkySportsGAA) June 18, 2022

Naturally, Murray and McManus departed Thurles via helicopter.

Hollywood actor Bill Murray & businessman J.P. McManus depart Dr Morris Park after the All Ireland quarter finals in Thurles this afternoon. #Hurling https://t.co/u3BYjUx3mk #SempleStadium #BillMurray @NenaghGuardian @Independent_ie pic.twitter.com/9R6Ul91Wnv

— Old Thurles (@OldThurles) June 18, 2022

Bill Murray's Irish roots

Of course, with a surname like "Murray," we can be sure that the beloved comedic actor has Irish roots. Murray grew up in Wilmette, Illinois, as part of a large Irish Catholic family. His father's father emigrated from County Cork, while his mother's family hails from County Galway. 

However, during a 2009 trip to Ireland Murray grumbled that "no one has ever claimed me in Ireland. No one!"

Well, any takers?