The first task the teacher had them do was sign to the student next to them what they did for the break between the semesters. Aaron got stuck with an...asshole for the first student he had to sign to. Dave was arrogant and loved to show off. They got thru it and then they each had to find someone else to sign to. Aaron turned to the table behind him and found two girls that were done already, so the three of them signed together.The one on his right was a tall skinny girl by the name of Lilly;. By this time my cock had swollen to enormous proportions. I know that many believe that we have a given cock size, but I am sure that the degree of excitement has something to do with size. My normally seven inch cock was at least an inch longer, and half an inch wider than normal. A large bubble of pre-come had collected at the tip. I continued to lick and lick. By now her hand was lightly grabbing my hair. In addition, my mother was lubricating obscenely, and wetness was actually coming out. I felt weak as I laid there shaking from the intense incest sex my sister and I just had. "Holy shit baby, that was awesome! I have never cum so much and so hard than I just did! Nothing compares to this!" I said out of breath."Trust me big brother, I know what you are talking about! I have never had a guy make me squirt, let alone have multiple orgasms, not once but twice in a row." She said"We would have said fuck society a looooong time ago!" I said."I know right?!" She replied. "There is. .. we loved one another and only wanted each other ... about a half hour of fucking a man walked in and pulled out his cock and said he was gonna make Connor suck it.. i stood up and slid my dick out of Connor , and while he was in ecstasy to my side i yelled at the man saying he was a perv (lol XD) and said he was harassing us and told him to leave.. by then Connor was awake and just looked at me in the loving way he always did and the only thing i could do was hold him..and after that it was.