Scene: you on your back wearing a white push up shelf type bra, white panties looking toward the camera.. like this> Here is a scene from yummymama that I find a real turn on with the dirty talk; https://www.xnxx.com/video-lb6yz34/petite_milf_sucking_cock_and_taking_massive_load_ You are masturbating for your 18yo son who you've been cock teasing for a while to the point that you want him to cum with you while you masturbate together before you cross the line and fuck. Use A LOT of dirty hot incestuous talk (you're one of the best at this) while playing with your breasts and with your hand in your panties. encouraging him to watch you and what you'll do for him. You take of your bra so you can get your nipples really hard and then your panties come off to show your son how you finger yourself and how good it would feel to have his cock inside of you, how much you want to fuck him. You tell your son what a dirty whore you are for your son's cock,encourage your son ..say that's it , say it out loud call your mother a dirty slut for her son's cock, say you're going to cum inside your mother, say you're going to cum inside your mom's pussy. yeah that's hot, that's so dirty, oh this is so wrong but tell me how much you like it. You want to cum on me ? want you to cum with me, Mommy wants your cum, cum anywhere you want, you want to cum in my mouth, in your own mother's mouth, etc, You want to fuck your own mother don't you? I think you know what I'm talking about. Limit "mommy" use mother, mom instead. Don't use "cunt" use pussy instead. Sexy voice, moaning , nipple and breast play.