My step sister Lexi helps to get me off

You see Lexi watching porn, but she reveals that it is your membership to JerkOffInstructions dot com that she is using. Your step sister is wondering why you would go to a website to learn how to jerk off instead of asking her to help you. Watching porn has made her horny and she wants to watch you jerk yourself off to her instructions. When she takes off her bra, her nipples are nice and hard just like your cock is. You cannot resist her offer to remove her panties and show you her pussy. You wonder how many other guys she has let see it and you never thought about how much of a slut your step sister Lexi is.