I've been on a bad movie kick lately, and in the surprisingly-fun Hell Comes To Frogtown (1988) the titular Sam Hell is found to be one of the few virile males left in what remains of post-Apocalyptic America after he falls into the hands of Medtech, an order of warror-nurses whose mission is to ensure that humanity doesn't die out. After Hell literally signs his dick over to the government and Medtech takes samples of his sperm, they decide he's more valuable as a mercenary and send him to rescue a group of fertile women who've been kidnapped by a frog-like mutant warlord. To ensure he doesn't run off instead of completing his mission, he's forced to wear an explosive codpiece and assigned to a cold, calculating, infertile officer-nurse called Spangle and a tough, aggressive gunner-nurse called Centinella.
Naturally, the adventure thrusts the Sam and Spangle together, Spangle's ice-cold demeanor eventually melts, Hell's cocky care-less attitude gives way to determination, and the two fall in love. There's a scene early on where, simultaneous to Spangle struggling with the first stirrings of a crush on Sam, she single-mindedly has him impregnate a fertile woman they've stumbled across and then celebrates the next morning when her tests show the girl's fallen pregnant. The movie ends with Sam and Spangle in the driver and passenger seats of a vehicle full of rescued girls, planning to take their honeymoon... after Sam's finished impregnating the girls, of course.
If you enjoy 80's schlock-action-comedy, I recommend this movie, and not just for the surprisingly up-front cuckquean aspects. If you're in the US or have a VPN with US nodes, you can watch it for free with ad breaks on Tubi.