Extra Big Dicks says: Michael Stax and 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.