cheng: YIKES!!! Please order your guys to not touch that cactus plant! My blood pressure skyrockets seeing anyone that near such a life threatening plant.
Yup, you fall into one of these in the desert, and you are a goner. It is a very slow, painful death, too. A bit like Chinese water torture I guess.
Please tell your Klickies to stand farther from these cacti in the future. Thanks, Pgal
(PS: good luck finding water in the desert!)