Adultery My Mom & the exchange student

[Penetration]

　"Sam, you're bullying mom again!" I felt my nails digging into my palms.
　　"Ah... Sam... eh... eh... no... no... stop... stop..."
　　Mom's voice was mixed with vibrato. Sam was doing something to his mother, and her mother was clearly rejecting Sam. But Sam, why don't you stop?
　　"Zi~Zi um~Zi...Mom, it smells so good here~it tastes so good~" There was a sound of water stains rubbing against something while the tongue was licking something. What was Sam licking?
　　"Ah"...
　　"Stop...Sam..."
　　"Ah huh~ stop... stop... I... I'm going to... be angry... Aha~"
　　Although my mother's voice was still trembling, her words became obviously serious, and she finally let out a seductive cry. Moaning, like something was making Mom feel good at this moment.
　　"Ze...stain...stain...Hmm! Mmm...ummm...um!..."
　　Sam was licking something, making the sound of his tongue rubbing against the flesh. He seemed to be enjoying the meal, and he let out bursts of "Hmm..." from his nasal cavity. Hmm!" A comfortable moan.
　　I couldn't stand what was happening inside anymore, so I squatted down, used the wall as a cover, and looked inside bit by bit.
　　But what was happening inside made me stunned. A dark humanoid monster was squatting naked in front of the door of his parents' bathroom on the second floor. In front of him was his mother, who was not standing upright at this time, but was leaning back. Leaning against the toilet door, her head lowered, her long hair hanging down like a waterfall on her tender white chest, her mother was wearing a white casual knitted cardigan with the buttons wide open at this time, revealing the pink bra under the clothes, with two snow-white masses. Her fleshy balls were tightly wrapped by the bra, but they kept trembling as her body kept twisting. The mother's two arms, as white and tender as milk, stretched out to her lower body and pressed tightly against a black ball, which was the head of the black monster. Her white fingers were clenched into claws, grabbing the monster's head and delusional. He tried to push the head away, but was unable to do so. He could only limply grasp the black head with curly short hair. The monster buried his face between his mother's snow-white legs. Although her mother was trying her best to shrink her thighs to prevent the black head from being buried in her thighs, a pair of pink underwear and The light gray cotton shorts were pulled to the knees by the hand of the black monster underneath him, and he could only hear the sound of water sucking from his mother's legs.
　　That black monster is Sam. His dark skin will be recognized by me even if it turns to ashes.