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**WARNING: SEXUALLY EXPLICIT CONTENT BELOW**

(Image: FACEBOOK)

The woman, believed to be in her 30s, was taking part in a raucous sex-game on the party-mad Spanish holiday island when she seemingly pooped in her pants.

In the minute-long clip – filmed on a mobile phone – the woman can be seen adopting various sexual positions with a male partner.

The man pretends to hump to woman repeatedly in the middle of a packed dancefloor, while onlookers egg them on and film the explicit scene.

But when the poor lass mounts the bloke, her bowels appear to suddenly give way, with one reveler shouting "she"s s*** herself” towards the end of the video.

(Image: FACEBOOK)

A stunned eyewitness told Daily Star Online the aim of the game was to act out explicit sex positions with a stranger in return for drinks.

Factory worker Steven Profit, from Newcastle, was drinking at the bar with his pals on October 1 when the outrageous sex-contest unfolded.

He said the woman was a newlywed holidaying on the island for her hen party with around six mates.

Steven, 31, said it was "quite possible" she pooped in her knickers because she was a "drunken mess".

(Image: FACEBOOK)

He said: "The woman on the video was a bride-to-be on a hen doo with her mates.

"There was a group of them, I'd take a guess at about six.

"The bride on the film was on the boat party throughout the day as well.

"She was just as bad then as she is on the video.”

(Image: FACEBOOK)

Sex games are all the rage on the popular party island, where young girls have been filmed performing oral sex for drinks.

Scores of shock videos showing binge-drinking Brits in Magaluf having full-on sex in front of cheering crowds have emerged online.