He knew that she would take any panties he had taken in the past, he couldn't hide a thing from her. He could see the disgust on his mother's face, hi... aunt could get under her skin sometimes."Sam I'm going to buy you knew panties." Sam's mother announced. "You know I don't like it when people wear second hand clothing." "We're not some poor house."Sam only nodded. Very much embarrassed that his mother and Aunt would always assume that he was wearing panties."I'll even help her pick them out". David is hard already and she can see his prick straining at his boxers, ‘Looks like the answer is yes’ she says. ‘I’ll just go see Les, don’t be long’. In the en-suite Les is already under the shower when the door opens and Izzy slides in beside him. Covering his rapidly stiffening cock with both hands Les splutters and asks Izzy what she is doing. Izzy explains about her lack of sex and asks if Les can help relive her frustration with David helping. Taking his hands and moving them away. I playfully threw her to one side, and thought spent and shaking a bit, I managed to get her up to her hands and knees. Getting behind her, I rubbed my hand between her legs, and once again lubricated myself in her cum. Then pressing her head down into my pillows and pulling her ass into the air, I lined up and pressed the head of my dick right against her asshole. “Hold on, wait a second,” she started to protest. We’d had anal sex only once before. She wasn’t really that into it, and all. I was able to do the same thing so I probed my tongue into her then curled it up, pulled back and did it again. Suddenly my mother’s thighs clamped around my head like a vice. I couldn’t breath for a few seconds her hold on me was so strong. She yelled out in pleasure and thrashed about. I was to say the least a little surprised.After she calmed down she said in a dreamy happy voice “Wow Billy where the hell did you learn to reach my g-spot?”“Your what spot?”She shook her head and said “It.