I hate that phrase...hate it, hate it, hate it.
What the f*ck does it even mean?
Here's what I suppose people (meaning men) are trying to convey when using the term 'Man Up!'
"Stop being such a wuss. Don't you realize that as a man it is your duty to never show emotion, never show vulnerability, and never, ever admit that you have feelings. It is your duty to act brutish, barbaric, and testosterone laced. Beat your girlfriend, drive drunk, terrorize your children, and buy a sawed off shot gun."
I almost hate 'Man Up!' as much as I hate 'That's so gay.' and 'Do you.'
Can we just strike all three from the American lexicon?