When he visits his girlfriend's home, her beautiful mother and sister welcome him—then announce that every boyfriend must undergo a semen evaluation. They jerk him off and taste his cum to judge its volume, thickness, and shooting distance, because excellent sperm is apparently a requirement for joining the family. One load is nowhere near enough, so they keep him performing again and again. The test turns into a P-to-M harem orgy, with his cock repeatedly filling mouths and pussies and creampieing the women. As he pounds away until he can barely tell whether he is inside a mouth or a pussy, he reaches one clear conclusion: P-to-M feels incredible. Now he wonders whether every previous boyfriend went through the same test.