He didn't wait. He pushed me into the room. "Please, Dr. Smith. I-I...just let me go home." My nerves were going crazy. "I just can't believe your stu...idity!" he screamed. "Please," I pleaded. He was really scaring me. "What time is it?" He was tapping his watch. I couldn't say anything. I knew I was past curfew, but just by one hour. A lot of my friends could stay out until 1am. Sometimes I could, too, but not when Dr. Smith was watching me. I had to check in with him on the weekends when my. I stopped after 3 or 4 minutes and let him sit down on the couch. I got on the couch on all fours beside him and leaned down started sucking him slowly licking up and down his shaft and licking his balls. He reached out and grabbed my ass with one hand rubbing my ass and asshole easing 1 finger in and out. I could tell he was about to cum so I stopped for a second and sucked on his nipples and then back to his cock for a few minutes. He then laid down on the couch and I got in the floor on. .this brunette had it...and was sucking me off...in a full ball, busting, bursting way...especially as her finger was rimming my anus too.However; in my delirium of satisfaction ...I had that sixth sense moment...the frickin you have caught out... The I am a cheating bastard moment.I had been enjoying watching my balls get licked and fondled. My cock wet with Erica’s gluey glistening saliva as she worked and worked my shaft ...when I looked past the brunette’s bobbing head level with my thighs. The girl definitely got her share of good views that afternoon.I was exited but did not really know what had happened there. The house rule had been broken but I did not put my sister on the spot.And then, just a few days later, the situation repeated itself. Only this time my sister arrived with a different friend. A week later she came with two other girls, then three.This continued to happen all summer long pretty much every week or even more frequent. There were new visitors, there were.