The precocious boys who came on a hot spring trip with their moms take advantage of their status as kids and burst into the women's bath. They are curious about the bodies of adult women with big breasts, and their dicks are throbbing hard! They pretend to wash her, play with her body, and rub their erect dicks against her big boobs and big ass. They were on their guard because they were kids, but the hot pussies of their mom friends were violated by the dicks of the naughty boys.