As i rubbed Marys crack my dick found its target and slid effortlessly inside her steaming pussy. As it did Mary arced her ass backwards and i fully w...nt in to my balls. She let a deep breath and i low moan as her cunt stretched to accept my rock hard erect cock as her pussy made a loud noise as the air was all forced out of it. I began to stroke my dick in and out as in about 30 seconds Mary squealed with a orgasm. Her ass making jerking motions trying to continue fucking as she came.. I wished I'd brought my binoculars! She folded her knees at right angles and spread them slowly and 'pedaled' with her legs apart. The bouncy ride made her big boobs shift harshly within her straining shirt; the buttons popped open one at a time with every other bounce. We all cheered at her sensual exposure as she slowed her gait and came very near the stands so we could tell that she neither wore panties nor was a natural blonde.As she started her second lap, her sister came out on another. He threw a blanket over me and asked if I wanted him to call the police. I told him I just wanted to get back into my apartment.’”“She leaned against me and cried softly for several minutes. I just waited her out. Finally, she continued, ‘I cleaned up in the shower and dried my hair. I put on my dream negligee that I’ve been saving for my wedding night, if I ever have one. Then I turned on all the gas, and lay down to die.’”“She looked me in the eyes and said, ‘You have to believe me. I didn’t. He licked it and sucked on her clit as she bucked her hips with delight. He had her feel his boner and then suck on it all in the name of ’sex lessons’. One appointment he was masturbating her while she sucked on his boner. She blurted out to put his boner in her and show her how to fuck real good. He said: “No, I can’t do that. You’ll have to find someone else to do that.” She said: “But my husband won’t even talk about sex. He just has sex with me for about two minutes and then he’s done. .