Dublin actor Steven Mangan, who audiences will know from his time on Red Rock, was shocked to be served an "abomination" pint of Guinness at a North Dublin pub.
Steven is also part of Michael Buble tribute band The Michael Buble experience, took a photograph of the pint which was served in a Bulmers glass.
Clearly horrified by what he had been served, he said: "That's just wrong.
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"When I returned it the manager dumped it down the sink and swapped this abomination for a real one.
"[It] didn't look much better to be honest."
Steven told Dublin Live: "It was a pint of Guinness served to me in a Bulmers Glass.
"I brought it back to the bar. The manager threw it down the sink. I said that it was an abomination.
"He gave me another one which wasn't great either," he added.
Steven explained that he used to be a publican himself, so he knows "very well that you don't serve Guinness in anything that's not a Guinness glass, especially not a Bulmers glass".
Revealing where in Dublin Steven thinks does the best pint of Guinness, he told us that is to be found in the Ardlea Inn in Artane.
"It's 100% the best pint of Guinness," he said.
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