I think dirty talk is both a matter of confidence and knowing the other person. Even if something said sounds a little awkward if it is said with confidence it normally accepted easier. So I think it's important not to second guess yourself right as you're saying something. Just let it happen.
Once you know someone well you normally have a good idea of what turns them on. So it becomes more natural to say those things over time.
Once you know someone well you normally have a good idea of what turns them on. So it becomes more natural to say those things over time.