[Ah... of course. It had to be the most troublesome.]

You’ve already stabbed me, so if you’re going to do it again, maybe over here?

[He touches the other side of his abdomen on the opposite side.]

I could then be balanced out.

[Hadn’t he been here long enough to calm down?]

Or, since you failed the last time....

[He puts his hand to an actual vital spot where a stab would definitely kill him in minutes.]

You could try here. If you really want to, I won’t stop you, but, it’s not going to make you feel better.