The Transformers star says she was too young to film in a bar, so instead was filmed dancing in a waterfall in six-inch heels.
A TV interview in which actress Megan Fox describes being asked to dance in a bikini and heels aged 15 has resurfaced.
The 2009 clip from Jimmy Kimmel Live! shows the Transformers actress describing working with director Michael Bay for the first time, where she talks about a scene in Bad Boys II.
Fox says: "I had just turned 15 and I was an extra in Bad Boys II. They were shooting this club scene and they brought me in and I was wearing a stars and stripes bikini and a red cowboy hat and six-inch heels.
"[Bay] approved it and they said 'Michael, she's 15 so you can't sit her at the bar and she can't have a drink in her hand', so, his solution to that problem was to then have me dancing underneath a waterfall getting soaking wet."
The audience then laugh, and Kimmel replies: "Perfectly wholesome".
Clarifying her age, Fox goes on: "At 15, I was in 10th grade. That's kind of a microcosm of how Bay's mind works."
Kimmel responds: "Yeah, well that's really a microcosm of how all our minds work. Some of us have the decency to repress those thoughts and pretend that they don't exist."
Fox replies: "Oh. OK", then looks out to the audience, before saying: "Right, right".
Twitter user liz w who shared the 2009 footage described the video in her post as a "clip from 2009 where Megan Fox tells a story about Michael Bay sexualising her as a 15 y/o.
"The crowd laughs, and Kimmel makes gross jokes.
"Teen girls being preyed on by older men has never been taken seriously and still isn't."
The post, which has been retweeted over 50k times, led the names Megan Fox and Michael Bay to trend on Twitter.
Fox has previously hit out at Bay - who she worked for in both Bad Boys II and the Transformers franchise - describing him as wanting to "be like Hitler on his sets" and "a nightmare to work for" during a 2009 interview with Wonderland magazine.
Following her comments, an open letter appeared on Bay's website, purporting to be from three anonymous members of the film crew, criticising Fox for unprofessional behaviour on set.
The letter credited Bay with "granting her the starring role in Transformers" and so making her "one of the most googled and oogled women on earth".
It went on to describe her as "the queen of talking trailer trash" and then compared her to a "porn star", calling her "thankless, classless and graceless".
After appearing in the first two Transformers films, Fox was replaced by British model Rosie Huntington-Whiteley in the third movie which was filmed in 2011.
Fox has gone on to play April O'Neil in the Teenage Mutant Ninja Turtles franchise and TV series New Girl.
She has most recently appeared in a music video for her boyfriend, American rapper Machine Gun Kelly.