Adore (2013) – Naomi Watts, Robin Wright
Two mothers who are best friends since childhood screw each other’s son.
Australia
Lover Boy (1989) – Australia
A teenager screws her mom’s friend who is temporarily separated and makes out with his pal’s girlfriend.
World of Sexual Fantasy (1976) aka Fantasm
Husbands play poker with their wives as bargaining chips. The stakes are more than just stripping.