I sort of used it myself. I heard a group of 5th grade boys making fun of a special needs student (my son but they didn’t know that) at lunch one day. After speaking to them about their behavior, I asked them if they even knew the boy’s name and one of them said “Sam.” “Do you know his last name?” “Smith.” Do you know my name?” “Miss Kelly.” Do you know my last name?” They shake their heads and I tell them “It’s Smith.” I wish you could’ve seen the looks on their faces.
Another at work similar. I was on break and 2 guys that had been working a project together was on break. One guy was cussing out the supervisor left and right with every derogatory name he could think of. I looked at Jared, the other young guy and he just grins and shakes his head. Later I walked back to where they were working and said to Jared, "hey, your dad wants to see you." The other guy asks who his dad is. His dad was the supervisor the guy was ranting about on break. The look on his face was priceless.