I've seen "suicide shifters" mentioned a few times, but I've never heard the term before. If I think about what it might mean, though, downtube shifters certainly seem like they might fit. Am I right, or does it mean something else?
Maybe there should be a thread for terminology? Some terms are not especially intuitive

("bottom bracket"? They call the pedaling subsystem a
"bottom bracket"? Where on earth did THAT term come from!? )