Severus almost stuck his arse up in the air at the intrusion. He wanted ridden and he wanted it right now. A distant, still sane part of his mind wondered how to explain to Charlie that he could be a bit of a randy satyr at times. He knew he could not be fully trusted to say if something hurt. There were times when his body reacted to pain as if it were an orgasmic pleasure.
He made a strangled sound in his throat then sighed. Charlie had just found the right amount of pressure and movement.