Virgin ass
This is one of the best positions to peg him for his first time. It gives you full access to his ass, and if he squirms, he can't squirm far away. You can easily press your whole body down on him, pinning him, and whisper commands that he must submit in his slutty little ears. Also, gentle kisses or sucking on his neck will arouse him again. As he starts enjoying that, you can start pegging him into his new world.