A booze-fueled ad company party got so raucous, a drunken client unzipped his pants and slung his penis over someone’s shoulder, calling it a “wristwatch,” according to a lawsuit from a female whistleblower who claims the international firm was a cesspool of frat boy shenanigans.

The phallic timepiece joke was a lowlight of the bash in Cannes, France, where Meaghan King claims she became a “sexual target” of the boss who oversaw the raunchy evening — and was later fired for complaining about his harassment.

Shortly after she was canned, Ogury exec Evan Rutchik got a big promotion at the international digital advertising business, King claims in a Manhattan Federal Court lawsuit

Rutchik allegedly told King to change into a bathing suit during the 2018 affair to “loosen up” the male clientele; though she declined, he tackled her into the pool while she was fully dressed, she said in court papers.

He insisted she show him her hotel room and at another point, pushed his groin into her from behind while whispering that he was in an “open relationship,” according to the litigation.

Rutchik “made sure to order an extraordinary amount of alcohol” for the party, so much so that things were apparently wild enough that one man exposed himself, slapping his member onto another man’s shoulder and “laughed uproariously, calling it a ‘wristwatch,'” King claims in legal papers.

King claims her complaints to superiors went nowhere, and that Rutchik later denied her a promotion, put her on a three-month performance improvement plan, and fired her a month later.

Rutchik was then put in charge of the company’s North and South American division, King said in the lawsuit against the exec and Ogury, which seeks unspecified damages.

A rep for Ogury said the company “takes this claim very seriously and has a zero tolerance policy against any and all forms of harassment. We have a clear and strong Equal Opportunity policy and procedure in place to prevent unlawful harassment, discrimination and retaliation.”