Legendary porn star Honma Yuri brings her explosive H-cup bust to a clinic devoted to developing the Spence breast gland, described as the breast's G-spot. Specialized massage makes her enormous tits bounce as she discovers breast orgasms; teasing toys drive her to pee, titjobs leave her drooling, and nipple-focused sex makes her squirt and convulse. She is also fucked and creampied while her nipples remain desperately teased.