bunch of bitches 

A bunch of annoying people, frequently women who talk way too much, but can also apply to men as well.

Can be abbreviated using B. O. B. (rapper not related)

Look at those stupid bunch of bitches, they're all terrorists.

bunch of bitches by DENNIS PLAYING TENNIS November 26, 2015

bunch of fat bitches

Surprisingly, "bunch of fat bitches" is not a term used to refer to overweight women in a derogatory manner, although it could be used that way. It is more often used to refer to just about anything in a negative light when the referrer can't think of anything wittier to say. See brainfart.
Doesn't always describe something in the plural sense. (See below).

"This taco tastes like a bunch of fat bitches."
Or;
Person #1: "Look at that bunch of fat bitches!"
Person #2: "..."
Person #2: "Your mom is a bunch of fat bitches."

bunch of fat bitches by StVandal September 12, 2008