That's what I am familiar with, Noddy. It doesn't have the hold on me it used to (if you are crying, it MUST be a ploy!), but I am still very leery of criers.
Girl cries, doesn't pay the ticket.
Girl cries, she gets the attention and what needs attending to is forgotten.
Girl cries, she gets the boy.
Girl cries, she doesn't have to do her work.
Girl cries, the kid gets a 'lickin' for being bad.
I once had a boss who was this sort. Horrible, horrible. She'd cry if someone showed up late!
Please don't take this the wrong way, yall who can cry in ease. There is crying because you really feel something and that is that, and there is nothing wrong with a good cry sometimes.
There is sure a lot of leverage to be used with crying though, if one is so inclined.