Wtf that's so weird. It's a very rude and wrong thing to do, so I would advise him to not do that type of stuff. And so that he understands my point better, I would bite his ass back as a revenge.
Bring them tk my apertment,torture them slowly,make them suffer,then suddenly relase their pain,waitch them love their life,when they het a loving wife,you strike at them,kill their loved ones,watch them suffer,and see their attemp to releive it