I've tried this a few times. I think he's getting it. Although my husband is having a tougher time with it. I'm not sure he's using the right body language. I immediately stop my attnetion. And when he starts to play nicer I give him my attention again.
I think C3PO is too rough for everyone in the house. Even Topaz my female B sometimes walks away from him when he's too rowdy. The stranger thing is that SHE (2yrs) is actually younger than him (3yrs). She'll sometimes get upset & growl & nip at him.