Oh okay. Weird. I overstayed 60 days, left Chiangmai December 2017. Then came back to Thailand through Bangkok March 2018. The immigration officer just looked through my passport, then said, "what happened here?". I said, "yeah I was stupid, my first time in Thailand and I thought I had 90 days...I'm just here for a few days to see a doctor, then I'm leaving" and showed him my outbound ticket. He let me in no problem.
I overstayed 60 days in 2017 and they gave me a “bad boy” stamp on my passport. I got a new passport recently though. So now they can’t know, right? They didn’t electronically scan my passport or anything. How do you know the record will “stay forever”….