I'm sitting here reading this, and a picture keeps popping into my head.
It's of the salesman's face, when you walk into an office supply or upholstery shop, and say, "I'm building a working model submarine, and I need some help." Or words to that effect.
Probably similar to the look I got, the first time I walked into my local model Railway shop and stated, "I'm building a model sub and need some diesel engines."
Or the poor woman. at the sewing shop. when I asked for the thinnest single strand thread she had. She asked what I needed it for. I just said, "My submarine." I wish I'd thought to bring a camera.
I don't suffer from ulcers, I'm a carrier.