A Brochick is a girl who hangs out with mostly guys. She may threaten them playfully and can even horse around with them without acting like a total girl.
A girl who can hold her own weight around the guys... though the guys care for her too much and wouldn't let her.
A fun chick who knows how to have a good time with a group of guys in a nonsexual way.
Ronny: "Damn, Marsha, you're my Brochick. I love you to death."
"You know that saying "Bro's before ho's"? Well, you're my bra..."