We all know that tearing up is an involuntary reflex. I cry very easily, myself, even at cute cat videos or sappy Facebook posts. And I don't do it intentionally, it's just something that happens when I'm emotional. I cry from joy or sentiment much more often than I do from frustration or anger or sadness!
We know that if a man accuses a woman of crying to "manipulate" him, he's usually just being an asshole, simply because women produce more prolactin (which is linked to tear production). But when a woman dislikes another woman, suddenly she thinks all her enemy's tears are fake or crocodile tears she's using to get her way. And while people can often exaggerate their emotions to get sympathy, it's really hard to force yourself to cry. There's a reason that even a lot of actors can't do it on command or have to work themselves up to perform an emotional scene.
And I know that people sometimes fake cry to manipulate others, which is awful. But ACTUAL LIQUID TEARS can't really be helped most of the time. Saying that any upset woman you personally dislike is crying solely to make you look bad seems kind of sexist, or at least narcissistic, to me.
In adulthood I've only been accused of crying to manipulate people by men, but I've seen women accuse other women of fake crying for attention, even when the tears are obviously visible. When I was in school, other girls would insult and bully me and then get mad at me for visibly crying because they thought I was trying to make the teacher punish them. I guess I just don't understand why women attack other women in this way when they should know exactly how mortifying it is to cry in front of other people.