Justin's doing a project where he has sex with guys and girls on alternate days and gauging people's reactions. The idea is to measure levels of homop...obia. His results were showing a very clear trend of more negative reactions to gay sex until Friday, when a bunch of cheerleaders saw him and gave him very positive reactions. Dr. Wagner suggested that he try measuring reactions to lesbian sex in addition to gay male and straight sex. Gretchen volunteered to do that part of the experiment and. Do you agree with these things Donny? I was surprised and excited at the same time.Yes mom I agree very much. Ok then starting now the new rules are in effect.Seconds later grandma walked in dressed in a see through negligee and no pantys.Her boobs were pretty saggy and touched her slight paunch,She had big brown nipples and very sparse pubic hair which was mostly grey.My cock began to rise in earnest as grandma turned. They hit it off, and after dinner, went to the bar, had another drink and started making out. They soon found themselves on the way to Kathy’s room, where they continued kissing and touching each other. Kathy could feel his arousal, but suddenly did not feel like having sex with him. She unzipped his pants and pulled out his cock, giving him a very enthusiastic blowjob. It was not long before he came, and when he was through, told Kathy it was her turn. She made some excuses saying the drinks. Rebeca followed us up and sat watching with a curious look on her face. As Zara climaxed for me, Rebeca crawled closer and had her face right in Zara’s pussy as she examined the evidence of Zara’s pleasure. I murmured for Zara to stay still as she recovered, and watched Rebeca inhale deeply before dropping her bone and running her tongue over Zara’s lips. She proceeded to thoroughly clean Zara before picking up her bone and giving me a curious look.“Are you going to let Zara pet you now and.