This is the stomach-turning moment a man pushes a salivary stone out of his submandibular duct.

Brandon Douglas, an American stationed with the Navy in Bahrain, posted the video to YouTube on Saturday and it was viewed nearly 200,000 times.

'I had some swelling on my sublingual gland which is right under your tongue.

'It had some pus/mucus stuff coming out so i had it looked at.

Brandon Douglas, an American stationed with the Navy in Bahrain, posted a video to YouTube of a salivary stone coming out of his mouth

Douglas said he felt something pushing its way out of his mouth after breakfast and decided to grab his phone before running to the bathroom to record what was happening

'Dentist said it was probably a stone developing (and) four days later I end up pushing that bad boy out.

'I guess its from not staying hydrated and some other factors. I stay pretty hydrated so I'm hoping it was a fluke,' Douglas wrote on Reddit.

Douglas said he felt something pushing its way out of his mouth after breakfast and decided to grab his phone before running to the bathroom to record what was happening.

The 30 second clip begins by showing Douglas's mouth open with his tongue up and a white object sticking out just beneath.

The man groans as he continues to push his tongue toward the roof of his mouth.

Then, a long white stone begins to emerge.

The 30 second clip begins by showing Douglas's mouth open with his tongue up and a white object sticking out just beneath

Using his fingers, Douglas pulls the salivary stone out of his mouth and spits in the sink

Douglas lifts his tongue once again as if to check that everything has been evacuated from the duct

Douglas doesn't appear to be in pain as the long, white stone slides out from his submandibular duct.

Amazingly, the stone creeps out for a solid ten seconds until it is clear of the hole in his mouth.

WHAT CAUSES SALIVARY STONES? "When spit (saliva) cannot exit a blocked tube (duct), it backs up into the gland, causing pain and swelling of the gland. The most common symptoms are pain and swelling of the affected gland at mealtimes. "About eight in ten salivary stones form in one of the submandibular glands. The submandibular duct is a tube, which runs from under the front of the tongue to the submandibular gland. "Most stones that cause symptoms will not go away unless they come out or are removed." SOURCE: Patient.info Advertisement

It drops into his lower jaw and appears to be about an inch-and-half long.

Using his fingers, Douglas pulls the salivary stone out of his mouth.

Douglas lifts his tongue once again as if to check that everything has been evacuated from the duct.

He spits into a sink and groans again, proclaiming: 'S***!'

'This thing was bothering me about five days. Dunno how I got it but my tongue s*** it out,' he wrote on the video.

Douglas also posted the clip to Reddit and it has since received more than 700 comments.