It's a classic case of the seasoned veteran breaking in the new recruit. Not all catboys are born knowing the way of the catboy, so it's up to the senior officer to show them what's what. He might be a little scared, but it's his first time so cut him some slack. His dick is hard so that's consent enough. Besides, after the first big dick is done slamming his insides, he should be loose enough for the next twenty.