Jonathan grins, sliding his fingers more vigerously up and down Finn's cock, "Glad you think so."

Then, feeling the increased intensity of Finn's fingers, Jonathan moans in pleasure, which is only intensified by the feeling of his teeth against his neck. Jonathan slides his free hand around the back of Finn's head to encourage him to keep nibbling at that spot.

The vent widens, and the tips of his hemipenes emerge. Slowly, at first. They're thinner than a typical human penis would be, but this is counterbalanced by the fact that there's two of them.