uh-huh. Definitely the past 😂. Ever been randomly asked to produce your passport? Me neither. Ever gotten stopped in a traffic stop? How did that end?
With overstay, you pay 500 baht per day on exit. To a maximum of 20,000 baht. BKK has a very large section to deal with overstay. Often a good sized lineup.
Thailand likes tourists. Nobody is looking to arrest and deport for short overstay
you can message them on messenger or the Line App. They will ask questions and give you the precise needs and costs for whatever your situation is. Best of luck