What is the origin of your SDMB screen name?

Let’s see whether this will correctly link to the explanation I gave in the older thread. – not only did it work, according to the preview, but it looks like much (not all) of the explanation shows up in this window.

ETA: in the other thread there was some discussion. I meant black locust, not honey locust. In other words: definitely thorny, but not that thorny.