Ping pong is a term used for hiding things in the vagina. They are called ping pong shows. But also the hiding of drugs in the body are called ping pong bombs. I think the whole issue is about hidding and getting it out again. Its about weapons, drugs, human trafficking etc. An underground. In that area the abuse of children and the corruption of the system is a goal at itself. Gaining more power and influence and being able to pervert the system and the people is a game of sad honour.