In this short scene, we learn that Caius has just inserted a little bit of his tip into the rock, but that it's not nearly enough to completely "swallow" and "curp" through the rock's surface. We learn that this is because Caius's body is so small that he's putting a lot of strain on it, and that's why the rock seems to be "putting a terrible strain" on the rock. Caius says he'll try to "take his time" and get used to this new thrust, but the rock says he won't be going any more today, so he warns Caius to "rub do not fret" . The rock says that he can't go any more because of the strain, but Caius reassures him by saying that his "large member" must be putting "a terrible strain on" him. He tells Caius not to worry, but to rub the rock gently with his "small body" , so that it doesn't hurt too much. The "small" part of the rock is the part that'll be thrust into Caius, and the "large" part is the one that will be thrust through his skin. The two of them begin to feel each other's "deepest part of against" each other, and Caius promises to "prick" each one of them with the thrust. He's going to "come each thrust" and make each one feel as if it were his own.