A mean milk trick left a shocked woman gagging in revulsion and the stomach-churning moment was caught on video .
In the prank, a devious man first sucks his milk drink into his mouth through a straw.
Holding the liquid in his mouth , he bends the straw and quickly puts it back in the glass with the bend submerged under the thick white liquid.
Two ends of the one straw protrude through the liquid giving the illusion of two separate straws.
He beckons with the drink to his female companion, who looks used to this gesture and bends her head to try the drink.