Femergy

A combination of "feminine" and "energy."

Femergy is the vibe in a room where there are mainly females present or a largely estrogen-centric feel.

One Female to Another: We need another sleep over party. There has been a serious lack of femergy in my life.

OR

Guy 1: Hey, my girlfriend's staring in "The Vagina Monologues." Anyway I can get you to suffer through it with me?
Guy 2: No way, dude! Way too much femergy in one room for me to handle!