Hehehee. I don't think he was going very deep (Kali? input?) mainly because he was being so damn fascinated with the process, and a bigger wound wouldn't have behaved as bizarrely I don't think.

Our Ianto is a bit too fastidious and has had one too many awful conversations about body fluids with Jack to be quite too into the blood I suspect. But you never know. He's a much sicker puppy than he thinks most of the time!