Good

'So good,' you manage to get out quietly.

"Mmm, that's my good boy. Very well behaved. Now... be quiet!"

She removes her hand from your neck and pushes your face into your pillow. Your heart is pounding now and your breath comes out ragged. Martha pulls out her finger and then grabs onto your ass cheeks roughly with both her hands. She kneads and grips your ass, pulling your cheeks apart.

"Shhhhhhhh, shhhh,"

Suddenly the head of Martha's cock is being pressed firmly into the space between your ass cheeks. She's moving it up and down, sliding between them, pressing them together with both hands. She pushes her cock downwards, pointing straight into your ass now. Without hesitation, the tip is pressing directly against your asshole.

"Shhhhhh..."

She slowly begins to push the tip into your hole.

"Mmmm"

Your breath hitches. Martha keeps a slow but steady pressure against the opening and doesn't allow it to slip back out.

"Ugh... yes, yes."

Her hands grasp tightly onto your sides, her nails digging into your skin. Then she pushes her entire weight forward into you with a sharp thrust of her hips and your entire body is shoved down into the bed. She is lying completely on top of you now. The head of her cock slips in all the way.

Martha grunts loudly in your ear.

You **** on the word and you begin to pant. Martha pushes your head further down into the bed.

You gasp and whimper as her member sinks slowly inside of you.

"That's a good step-brother. So nice and quiet. So nice and still."