Without pause, Riley now began lapping at that as well.As Lucas looked at me, he smiled and said, “Riley is a real jizz junkie.”When we went throu...h to their living area, we had a few more drinks. Fortunately, they were not upset when I asked for a beer.Upon returning to their room, our bodies ebbed and flowed on the bed for the next hour as we sucked, licked, kissed, and fucked. It was spectacular!When we finally drifted off to sleep, I did so in the middle of the two hunks, more contented. I wanted more so I handed more to her which she so graciously obliged sometimes just her fingers would come back wet with her juices for me to suck clean. We made quick work of the bacon we had at the table. She turned her attention back to my cock pumping it a few more time to make sure it was hard enough for what was to come next. When she was sure it was just the right firmness her head disappeared back under the table. After little rustling her firm round ass appeared from under the table. ‘A’ is the first letter of the alphabet, while ‘F’ is the sixth ... and ‘I’ is the ninth! Hah!” she repeated, “You never got past the first letter!”“Gram,” Caitie interjected while barely able to control her giggles, “‘A’ is the best grade possible. And, dear Grandmother, I really hate to say this, but ‘F’ is for ‘failure’ and ‘I’ is for ‘incomplete.’” With her eyes wide she added, “Dear Grandmother, I hate to point this out, but you were an academic bust!”Then Caitie’s attitude changed. We took a weekend vacation to Vegas and I knew it would be the perfect time. Though we had a hotel room on the strip, I got us an extra room off the strip without her knowing. Then I had her dress up extra sexy and we went out dancing. Here is when I started the fun. I told her that she was my sex slave and had to do what I asked for the night. She agreed (as long as I would promise not to hurt her and be sure she had a few drink). So I got her a few drinks and we were dancing. I told her that.