I witnessed her asshole part as the tip of Tom's dick pushed forward. My heart beat faster and adrenaline flowed through my veins as the head disappeared into her asshole. He stopped pushing to allow my wife to get used to his cock. He then pushed in another inch and paused again. I could see the look of discomfort on Donna's face but she didn't look like she was in pain. Tom pushed another inch or two into her. Then on one final push, his lower stomach was pressed up against her ass; he had his entire cock buried in her ass. His dream had come true as he started...