HUNTB-312 "If you get hard within a minute, I win! Then let's do it!" Crazy high-speed cowgirl position, multiple explosive orgasms! Make her explode with pleasure! My stepsister is a super horny sex addict!

Anyway, she loves sex so much that she doesn't care who it's with! She's an incredibly promiscuous stepsister. So my stepsister always tries to have sex with me whenever she gets the chance! No matter how many times I refuse, she says, "If you get hard in less than a minute using me, then I win and we can have sex," so I couldn't refuse and ended up challenging her. Of course, I lost instantly! Then my stepsister proudly sucked my dick, thrust it in with a "plop," and wildly shook her hips in ecstatic delight! It was so intense that my dick felt like it might break off from the insane grinding!