Do it.

Shocked, speechless, you just nod, accepting your Mom's proposal. She smiles and reaches out to you, pulling your robe off of your shoulders and saying, "Let's get you out of this stuff." After helping you out of your robe, she reaches behind your back and unhooks your bra for you. You let your bra slide off you arms and fall to the carpet, then hesitantly pull your panties down and let them join your bra in the floor.

Your Mom looks down and carefully unties the sash around her waist, opening her robe to expose herself to you. You look down at your Mother's body, from her beautiful breasts down to the massive dark bush between her thighs. She leans toward you, parting her lips to kiss your mouth. Unable to think for yourself right now, you just follow her lead, leaning in and kissing your Mom. You embrace each other gently as your mouths intertwine, feeling her tongue softly brushing against yours. Your penis pulses, standing at full attention as you make out with your Mom, until she eventually breaks off the kiss.

She stands up, pulls her robe off of her shoulders, and lets it slide down her body, into the floor. With her nude body now fully exposed to you, she crawls up onto the bed and over to the middle of the mattress, giving you a good look at her supple bottom as she does. She stacks the pillows at the head of the bed, and lays on her back, using the pillows to prop herself up at a steep angle. She spreads her knees wide, displaying her hairy crotch as she looks you in the eye and says, "Lick my vagina."

You are taken aback by the forwardness of your Mother's instruction, but follow it obediently, crawling on all fours in between her legs. Your heart pounds. Your Mother's womanly scent fills your nostrils as you bring your face to her pussy, which is budding open, already sloppy and glistening from the pounding she was just getting from her husband. Your Mother strokes your hair again, encouraging you, "Go ahead, sweetie. Lick it." You ease your face into her crotch, opening your mouth and running your tongue across the length of your Mom's pussy. Tasting the salty, musky flavors, you realize that you are tasting both your Mother's AND your Stepfather's sexual juices. You close your eyes, kissing, licking and suckling your Mother's pussy, relishing her flavor and the wiry texture of her bushy pubes in your mouth. Your cock strains even harder, dripping it's own fluid as your Mom's breathing gets heavier. You don't know how much time passes before you Mother grabs your head and pulls it away from her crotch. She pushes you back, onto your knees, then she leans forward and takes your rock hard dick in her soft hand.

You lick the juice from your lips as you look down at your Mother, opening her mouth, leaning her head into your crotch, and taking your penis in between her supple, moist lips. You gasp as watch your Mom suckling your prick, lubing you up with her spit. As soon as your dick is coated in her slobber, your Mom leans back, laying on the bed again and spreading herself for you as she says, "Go ahead and put it in."

Hesitantly, you obey your Mom, crawling over her until your pelvis is between her thighs. Not actually touching your Mother, you just hold yourself over her for a second, your cock pointing at her open pussy. You feel her grab your shaft and guiding the head of your prick into her hot, wet, fleshy hole. You moan as you sink your dick into your Mommy. You feel her hands on your butt cheeks as she gently guides the movement of your hips against her. Your Mom's nude breasts and tummy brush against your front, giving you a bizarre thrill. Strangely, you hold yourself up off of her, just a little uncomfortable with your Mom's nude body pressing against yours, even as you slide your penis back and forth inside of her.

Looking down at your Mom's beautiful face, her eyes closed, her lips parted, her breasts swaying back and forth as she gropes your buttocks, pulling you into her, burying your manhood deep within her hot, slippery, wonderful vagina, poking at the edge of her womb... you can't last very long.

You feel a great swelling inside yourself, and know that you are about to have one of the most massive ejaculations of your life. (and are therefore going to have to make a decision about where to dump it) Your Mom is still of child-bearing years and you aren't using any protection, but the fact that she was making love to your Stepfather without a condom and then invited you to do the same leads you to believe that she must be on some type of birth control........

Oh God, here it comes... Do you pull out, or just keeping pounding your Mommy until you fill her pussy up with cum?