People have been left horrified after a Guinness reviewer shared a shocking snap of a pint their friend purchased whilst in the US.
Drinkers of the black stuff were baffled after viewing the pint that bore more resemblance to a 99 ice cream than Guinness.
Taking to Twitter, the Glasgow Guinness Man shared the image of the strange looking pint that had been ordered in Tennessee.
READ MORE: Man horrified after being charged €10.50 for bottle of cider in Irish pub
He said: "Mate of mine sent me this, he's in Tennessee right now. What da f**k is going on here?!"
The reviewer then explained that the odd pint was referred to by bar staff as a "nitro pint" - despite one punter pointing out that Guinness is exclusively served on nitrogen.
The "monstrosities" differed immensely from the typical pint of plain, which is served black with a creamy white head poured in two parts and left to settle.
Fuming Guinness fans flooded to the comment section to express their thoughts on the pints.
They said: "Thats actually probably enough for a prison sentence for the bar man.."
A second said: "What's going on with these pints of Guinness,outrageous!!"
While a third commented: "Having tasted Guinness in Tennessee, I can absolutely state, forget what it looks like, it tastes nothing like Guinness over there. Sewer water".
Other;s laughed at the pints uncanny resemblance to a 99.
They said: 'All its missing is a flake and some sprinkles".
"What on earths that ! Do you want a flake with that ?!", wrote a second.
Meanwhile, some suggested the reason for its strange appearance could be due to poor line maintenance.
They said: "I read somewhere that beer lines only get cleaned every 2 weeks in the US. So it's probably a combo of unclean lines and the cooler in the cellar not being at the right temperature Guinness needs to be extra cold".
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