A MAN got the shock of his life when he found a human penis in his drink.

Thirsty machine operator Juan Sanchez-Marchez, 41, was necking back the tasty fruit beverage when he made the horrific discovery in the opaque red liquid.

Stunned Juan called over 16-year-old son Manuel, who works with him in Commerce City, Colorado, and the pair then showed it to their boss.

According to the Rocky Mountain News, he told them it looked like a willy and cops were called in

A local pathologist examined the offending object and confirmed that it was indeed a 3in segment of human penis which had been severed at the base.

Tests are now being carried out to determine the age of the member and to see it it was taken from a cadaver or a living person.

Cops are also probing possible links between the discovery and other body part "finds" in the area in which a head and part of a leg have been found but not identified.

 "It's a mystery," police spokeswoman Elaine Rowe said. 

"We don't know if there is a crime involved. This could be a fraud, mutilation or attempted homicide."

Juan insists the bottle was sealed until he opened it.

"It's a very hard top to get off," he said.

And cops do not believe Juan put the penis in the bottle.

"He's a very credible witness," Ms Rowe said.

Juan bought five other bottles at the same time.

None of those were affected.

But supermarkets in the area have removed stocks of the drink from their shelves as a precaution.

Police spokeswoman Ms Rowe said the drink was dated at least a year ago and bottled at a plant in Pennsylvania.

"They said there was no way it could have occurred there," she said.

"It's a mystery where it came from and how it got into this bottle."

One thing's for certain though, it's a tale that some people might find hard to swallow.