@Bruce ********
I get yelled at, twice. Once at BKK airport and once at the Lao border. Both times it was because I had goofy paperwork.
BKK, I had a 90 day Non-B visa, I think, I left for India and gotten a reentry permit. Not so strange but usually people extend their non-b for a year, and I had not. Its off-topic conversation but basically the original IO thought my paperwork looked strange.
Lao border, I went cross the border had lunch and came back. I did not use an agent. When coming back through to thailand I didn't know if I need photo copies or other paper work. I ask the photo copy person and they told me go ask in the office. The office walked me out to the supervisor, and they yelled at me. Kinda nice though, I didn't have to wait in line to get my stamp.