anrhydeddu
To whine incessantly; to assume the glass is not only half empty, but the person pouring the drink is bent on destroying the world as we know it.
Thank you for your hospitality. I don't mean to be an anrhydeddu, but I noticed the toilet paper rolls in your bathrooms are threaded over the bar, and I would be more comfortable as a dinner guest if they were threaded under the bar.