Bitch duck is a cartoon character Peter Griffin from the television program Family Guy created for his show "Handiquacks". She likes to have no fun, and ruins others fun.
A bitchmistress is an obstreperous and obnoxcious cunt of a woman who has a willing yet sniveling husband, trick, or boyfriend in tow. She makes him do everything for her and complaines the whole time, spending his cash and bitching. Meanwhile he eagerly grovels at her feet.
If that idiot and his bitchmistress ever come back, I'll eat glass before I'll wait on their table.