There is nothing new under the sun here. Women will be catty towards each other, every chance they get, no matter their station in life.
From Seinfeld — The Library:
ELAINE: Why do they call it a wedgie?
GEORGE: Because the underwear is pulled up from the back and ... it wedges in..
JERRY: They also have an atomic wedgie. Now the goal there is to actually get the
waistband on top of the head. Very rare.
ELAINE: Boys are sick.
JERRY: Well what do girls do ?
ELAINE: We just tease some one ‘til they develop an eating disorder.
Oh the things I have heard women call other women @ work ( and I heard it, they knew it and smiled) and in other professional environments would make a long shore-man blush. You are right, nothing new, lets move along.