I wasn't going to post this HH but it's seemingly topical at the moment.
Playing 0.50/1 at Gala Notts last night. Villain is a old Greek man named Jimmy. A local legend, plays every day, wins money for sure in the local comps but is basically bad. We have a lot of history and I have stacked him three times in this session already. He has since won a massive pot and is playing £500, I cover.
I open

UTG to £6 he 3bets to £21, I tank and 4bet to £56. He tanks plays with his £5 chips for a while, then goes to his stack of ponies and makes it £129.
Based on my history with him and my read, I was 90% sure he flats with QQ> or AK here when we're 500bbs deep.
I've never folded kings pre before but really thought this was a spot where I should.