Adultery My Mom & the exchange student

[Penetration]

　　But how did this guy know that today was his mother's birthday? 
　　"Hey, dad, Zihan, I also accidentally saw my mother's birth date when I went to her bank to withdraw money a few days ago. Don't worry, I have prepared birthday gifts for the three of us men to give to my mother."
　　"Wait for me..." Sam said and ran down the beach with his upper body naked. 
　　"Mom, Dad, Zihan, please pay attention..." Sam said loudly to us under the beach. 
　　The three of us were at a loss. 
　　With a loud "Boom...", a firework was lit from under the beach where we were and shot straight into the air. 
　　"Boom!..." Fireworks rushed from the beach into the air, lighting up the entire beach and causing the men and women still playing on the beach to scream one after another. 
　　The fireworks reached their highest point and then exploded, filling the sky with colorful colors in an instant. 
　　"Boom..." 
　　"Boom!..." 
　　"Boom... Boom!..." Fireworks under the beach exploded in the air one after another. Then with the brightness of the fireworks, I seemed to see Sam hurriedly coming up from the beach. 
　　"Boom...boom!..." The fireworks continued to rise into the sky. I looked at my mother between my father and me, with tears in her eyes and covering her mouth in excitement. 
　　"HAPPY. BIRTHDAY. TO. YOU. HAPPY. BIRTHDAY. TO. YOU!..." Amidst the explosions of fireworks, Sam sang the birthday song from behind us. The three of us turned around and looked behind us. Sam held a lit candle in his hands. A big cake with a thick candle came to my mother. 
　　Looking at the song Sam sang, I started singing along. My father was stunned for a moment, and then he also started singing along. We clapped our hands, and Sam handed the cake to my mother. 
　　My mother was so excited that she couldn't speak. She covered her mouth with slightly trembling hands, as if there were tears in her beautiful eyes. 
　　"Mom, make a wish." 
　　"..." Mom didn't reply to him, closed her eyes, and after the last huge sound of fireworks "Boom..." rose into the sky and exploded "Boom!...", the whole beach looked like It was as bright as day, and my mother opened her eyes and blew out the candles on the cake. 
　　"Wow...Happy birthday, mom! Getting more and more beautiful and younger!" Sam said with a smile.
　　"It's time for you to send blessings to your mother, Zihan." Sam looked at me. 
　　"I wish my mother to be happy every day and have no worries!" I said happily. 
　　"I wish my wife all the best and good health!" Dad immediately answered. 
　　"...Thank you...Thank you." Mom's beautiful eyes were filled with tears of emotion, and she looked at us with a happy smile.