Well, there is the part of Robert's back that Don struck during the sparring - even though it doesn't hurt anymore, it'd be nice to have it touched right now in a way that's less aggressive... provided it doesn't make him feel bad again about what happened.

Rather than voice this specifically, though, Robert tries a less verbal approach, distinctly inclining his spine outwards in a way that is hopefully interpretable as wanting it to be touched, rather than anything else.