A couple of night's later Grandad went to the bar.I told Gran I was going to bed early,I went up arranged the pillow's in my bed to look like I was in... it.Then I slipped into Gran's room and hid under the bed.After a while Gran came into the room,she sat down on the bed,my heart was pounding I was sure she would hear it beating.She started undressing first her blouse hit the floor, then her bra,next came her skirt, her tight's,and then her pantie's,wow I thought Gran is naked,in the same room as. She stood up and putting her hands on her lovely round hips said “Don’t be so innocent. You know what I was doing. You’ve been watching me for months through that peephole. You think I didn’t know that you were watching me get fucked? “I was surprised to hear this and stood speechless, not knowing how to proceed… She was standing there all naked, her firm 34C breasts, her28 inch waist and very firm ass, within reach I stared at this 5’9” tall, very beautiful 22 year old woman and realized that. " Thank you, Patti. I am pleased to meet you as well."Marie came to the group and announced, "Please, come in and make yourselves comfortable. What can we get for you to drink?"We moved into the family room and found seats. Andrew came in and asked what everyone wanted to drink; he already had the TV tuned to the football game. I had a feeling there might be quite a bit of drinking tonight and opted for Chianti.Jean went into the kitchen with Marie and they chatted for a few minutes.The phone. We rolled over and once again Derek made long, slow, love to me, pumping his cock into my pussy time after time and bringing me to orgasm after orgasm. He must have fucked me for a solid hour as I creamed on his big black cock and kissed him, begging for more of his big black cock. When he was ready, he got up and led me to the railing around the balcony. He bent me over the railing and entered my sopping wet pussy from behind and started fucking again. This time it was all for him. I watched.