"Boys, I'm sorry to eavesdrop, but I heard you all talking about...sex. And I just couldn't live with myself if I didn't come in here to disabuse you of some of your sillier notions! I heard you all saying that women don't cum, and that's simply untrue. So, I'm going to demonstrate for you all, ok? I'm going to show you all how I cum, and then, you're going to take your cocks out and stroke for me, ok?" Your step-mom has been teaching you about all this stuff for a while now, so I guess it's not so surprising she's extending the step-sons to the whole sleepover. You just didn't expect to get so excited watching her take all that cum! Every single boy is stroking watching your step-mom masturbating, watching her squirt hard, leaving her pussy soaking wet. You wish you could lick her up, use the skills she taught you to make her cum again, but she's on a mission--a mission to make all your friends give her big, huge facials, until she's dripping with cum! You're more than happy to go last, to add your thick load to the absolute mess.