The War of the Roses (1989) - Kathleen Turner Footsie

A woman visits her estranged husbands divorce attorney to request that he speak to the husband and ask him to stop fighting her on the divorce she wants. When he explains that would be unethical, she remembers a dinner party thrown years earlier by her husband where the attorney indulged in his foot fetish under the table with his then girlfriend, giving him a foot job under the table. The woman then moves to the attorney, sits on his desk, and then kicks off her right high heel before slipping off her left high heel. She then crosses her right leg over her left and slides her foot into the attorney's crotch. She starts to unbutton her blouse when the attorney removes her foot and tells her that he has not been into feet since that dinner party.