Not that kind of 'cactus' Tex. Anyway the so-called 'Tequila Cactus' is not a cactus, it's the Blue Agave. As such it's more closely related to lilies than cacti. All 3 are are Angiosperms [flowering seed producers] but true Cacti are of the clade Eudicots whereas Agaves and Lilium are both Monocots. In fact, the agave is even more closely related to Asparagus because both are in the family Asparagaceae ... but i digress.
The Oz slang 'cactus' means broken, dead, useless, wrecked [i.e totally stuffed!]. Pretty much synonymous with the more universal 'hosed' which i should have used. We will sometimes dress it up a bit tongue-in-cheek as 'cactus rootus' to give it a faux Latin sound, but don't even get me started on the last part 'cos rather than making the 2 word term more suitable for genteel polite mixed company it makes it much, much worse.
As an aviation enthusiast, i have always found it amusing that US Airways chose 'Cactus' as their designator [Qantas is just 'Qantas', British Airways is 'Speedbird' or Birdseed according to Aussie ATCs with a sense of humour] and the designator Cactus was blissfully unwittingly requested by US Airlines and approved by ICAO, both. To Aussies, an airline designator meaning broken, dead, useless, wrecked etc is a big laugh. Not so funny listening to the tape of the transmission between ATC and Cactus 1549 before the jet-less jockeys safely got that A320 glider onto the Hudson in one piece [pity they never got far enough into the ditching procedure to close the bungs or it'd have floated forever] .... Ok, i digress again. Are you now sorry you mentioned 'cactus' Tex?
Ask woteva ya want about the 255W mate, i know more about them than any cactus.