Literally everyone seems to have recently developed the habit (or meme) of starting a reply to a question with 'yeah, no' or 'no, yeah'
You watch for it, everyone does it! I'm sure it's just a recent thing as well.
Double negatives annoy me intensly too, I think I may have been a grammar school teacher in a previous life.
'at the end of the day' makes me want to kill the utterer.
I had a bad motorbike accident involving an uninsured driver, my solicitor was an inefficient stupid patronising cow who I had to deal with for over 12 months before I got my compo, she used it every 2nd sentence on the phone. Arrgh