Between the two of them, they've had a 100-year career and have slept with an estimated 355,000 men. But twins Louise and Martine Fokkens, believed to be the oldest prostitutes in Amsterdam, are soon going to hang up their fishnets for the last time. One of the 70-year-old sisters says she's retiring because her arthritis, while the other says she's finding it hard to attract new clients. Both women turned to prostitution when they were 20 years old as a way to pay their bills. And — thanks to a new documentary called (wait for it … wait for it) "Meet the Fokkens," they'll have enough income to keep them fully clothed for the rest of their lives.