to gain the perspective of an adult (usually male) in order to achieve a goal.
If he wants to get a job, he should put down the crayons and man up.
1.) To fulfil your needs to become a macho, toughened up, non-sissy lala type of man
2.) To "man up!" refers to "don't be a pussy", "wipe them tears", "man the freak up!"
3.) To achieve a fathers personal hope of becoming a man
I want my mommyyyyyy!
-MAN THE FUCK UP ! WIPE THEM LALA ASS TEARS !!!!!! MAN UP !!