Michael & Jacob Stax are identical twins and have decided to participate in a Twin Study to make some extra cash. They are in the waiting room of the Clinic Office discussing what is going to happen. Jacob is nervous about the study, but Michael Stax seems a little more relaxed about it. They are both giving a sperm donation as part of the study and wondering what it will be like when they go into the back. Just then Cesar Rossi comes into the room and asks for Michael to come to the back with him. Once in the exam room, Cesar tells Michael that they will be doing a flaccid and erect measurement of his penis as well as collecting the sperm sample. He gets the flaccid measurement and then tells Michael he needs to get erect. Michael asks if there are any porn magazines available and Cesar tells him he is there to help. With that Cesar starts stroking Michael's cock and then sucking it. As he sucks Michael's cock grows fully hard and Cesar measures it at a little more than 8 inches. Needing the sperm sample he continues to suck Michael's big cock and then offers up his ass. Michael fucks Cesar hard and deep over the exam table and then Cesar flips on his back and Michael continues to fuck him until he cums on himself. Cesar then grabs the container to collect the sperm sample and has Michael jack off into the container. Enjoy!