In Excess (1992)

Britt Morgan's husband Tom Byron would rather watch a bunch of 300-lb. Brain-dead jocks chase a pig skin around than come to bed and play ball with his ravishing wife, so she gets even by boffing the hell out of Tom Chapman. Unfortunately, her hubby's also getting lovin' on the side when he's not watching the game, and Britt, when she catches him, kicks him out. Although she then heads off to a nudist camp to cool off, but it doesn't work out too well what with all the really hot sex she has with her fellow campers.