Well, most of my friends and acquaintances are women and it's not uncommon for them to say stuff like "I need to grow a pair" or "I need to just man up" if they

Well, most of my friends and acquaintances are women and it's not uncommon for them to say stuff like "I need to grow a pair" or "I need to just man up" if they think they're being a bit unconfident. They're very gendered phrases and I must admit to finding it a bit strange hearing women say them, but it does demonstrate that they've become pretty neutralised in modern parlance.