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Vile video shows the woman with a reservoir of the green goo in her mouth as it pours from the hole.

But the flow is slowed by a stone that has formed over the affected salivary gland, bulging beneath the tongue.

“There’s something stuck,” the woman says, contorting her face, “It’s trying to come out.”

(Image: SG)

With that the stone fires out of her gob, revealing a pyroclastic surge of pus.

Soon a gruesome blend of blood and pus is falling out of her mouth – the last of the liquid.

Feeling her neck, she says that her swelling has gone down and brands the experience “extremely disgusting”.

Salivary gland stones occur when the chemicals in spit crystallise to form a tiny stone, according to the NHS.

(Image: SG)

And while people can try to dislodge them at home, the NHS says most need an operation to remove.

When the revolting footage was posted online, revolted Reddit users said it almost made them sick.

“I just dry heaved,” said one, with another adding: “[I] definitely almost threw up entirely.”

One more wrote: “Nothing on this site has ever made me heave. Until now.”