An asshole, especially an old asshole, who’s insanely rude to everyone and then bitches and lectures about how no has any manners these days.
“I’ve been on hold for three fucking minutes! In my day, we knew how to say sir and ma’am and not keep people waiting all day for a simple answer, you mongoloid sonofabitch! Now get me to someone who speaks real fucking English...damn Spics...and don’t put me on hold!” said the cranky 90 year old Mrs. Mannerless to a customer service rep.
Mrs. Mannerless felt the need to lecture the cashier on the proper way to greet a customer, ring up items, and bag groceries in a 23 minute long obscenity laden rant which included her spraying thick globs of menthol stinking spit all over register 10 during her more animated moments.