A letter to the editor in a paper made reference to Hillary Rodham Clinton’s initials being “HRC,” and so would be funny to Brits.
A trip to Urban Dictionary only yields Human Rights Campaign and a secondary meaning as hardcore, though capitalized differently. Nothing too rib-tickling there.
While I can think of some nasty words to fit into the initials I’m not aware of any of those phrases being common slang. Maybe I’m just ignorant, though.
I assume it would be a reference to the “royal” abbreviations. “HRH” for “His Royal Highness”, for example. Presumably, “HRC” would be “Her Royal C____”. I leave it to your imagination and political inclinations to fill in the blank.
Further thought…we generally don’t abbreviate names in this way, and they just sound slightly odd. Except for JFK. The ex-Tory leader Iain Duncan Smith liked to do it, and ended up half a syllable away from a digestive condition. Hillary gets close to being a main topic of conversation for menopausal women.
I think WotNot’s put his finger on it, if you’ll excuse the metaphor.
To be arsey in British English means to be obstreperous.
Then again, I had to think for a few seconds to come up with any problem with “HRC” - the letter-writer is being a little over-imaginative here, I think.