When a group of McDonalds female employees get together, whether it be for training or socializing, and a choice few of them act like they are too good to hang out with the rest.
Usually these girls look very high maintianence, will give a small smile followed by an eye roll if you acknowledge them.
"It it looks like a bitch, acts like a bitch, and works at McyD's.... Its a McBitch"
grl 1: how come those girls wont talk to me?
grl 2: those snotty ones from the other stores?
grl 1: yeah...they look at me and laugh....
grl 2: dont sweat it.... they are some McBitches.