An excerpt from the article link I just posted:
And then there are the orgasm girls.
They are three blonds from Detroit - two are 17, one is 20 - and are onstage for the "orgasm contest," where participants loudly fake sex noises.
The girls all wear tiny tank tops and tinier skirts.
They lose the contest, but get free beer. They wobble to the restroom, holding hands so they don't lose each other in the thick crowd.
They are confident nothing bad could happen to them in the Bahamas. They've heard of Natalee Holloway, but one girl's mom is around, just in case.