Mao, my mother's best friend, came to our house earlier than the appointed time. My mother had just gone out, so my son and Mao were left alone to wait for her. Her big breasts were peeking out from her boldly open chest. Her thighs were unashamedly exposed, and my son couldn't help but get an erection. Seeing her son's reaction, Mao smiled seductively and whispered in his ear, "I'll make your penis feel better, it looks like it's in pain."