A few years back I remember queueing at Swampy Immigration on returning to Thailand. I joined a queue where the opposite one was moving much faster than mine, the person opposite me in the other queue got my attention as she was a beautiful young girl.
I was amazed to find that she reached the IO a good few people before me, I would estimate I had to wait at least 15 mins after she had gone through. When I reached the IO I noticed it was a woman, but if I am being honest, I did not look to see if it was a man IO at the other queue, though I would like to bet that it would have been.