Oh, THAT one. For a minute I got it confused with the lichi tomato, Solanum sisymbriifolium (which I have also heard referred to as the five minute plant, since it is equally thorny).
But there ARE other equally thorny plants out there. I have recently been playing around with some species of the Genus Caesalpinia (most familiar to gardeners from the Bird of Paradise flower, Caesalpinia gillesii, and the peacock flowers C. pulcherrima .). But I have been working with some of the other species. ALL are super thorny, and while the two above are shrubby, this is not universal to the genus. C. Bonduc The grey nickernut (whose seeds, as a common "sea bean" are widely used as jewelry and gaming counters, is a sort of weedy little thing. But C. sappan, and C. cilliata are BIG timber trees. And so is C. echinata whose species name I think means "spiny". Actually if echinata and sappan WEREN'T big trees, they probably wouldn't be so valuable and endangered (Both are producers of Brazil Wood[From which the country of Brazil gets it's name], or Pernambuco, used in furniture, VERY expensive violin bows, and dyeing)