wrestling move or anti-apartheid activist?

so the other day, i was at home and susan asked me to name the wrestling move where you put your arm under that of your opponent and bring it around the back of their head. i was like, "half-nelson?" and she started laughing. of course, i asked her why it was funny. she told me that earlier, JC had said to TY that she was going to use that wrestling move on him, but she called it a "mandela." that made me laugh...a lot. i was told that JC had TY look it up on wikipedia because maybe "mandela" was slang for the move.