Koichiro Uno's Wet and Riding

Koichiro Uno's Wet and Riding (1982) is a comedy directed by Junichi Suzuki rated 4.9/10.

Yoko is a housewife who's frustrated by her husband's lack of virility. She finds solace in erotic daydreams, the ministrations of a condom salesman and, eventually, the partner-swapping lifestyle.