the.com/walking stick

A third leg you buy before your body files the paperwork for one.

means A cane or staff used to steady a person's step while walking, whether for balance, support, or terrain.

from A plainly descriptive compound — 'walking' plus 'stick' — that entered English use as such aids became common accessories, from rough-cut branches to fashioned canes; the same phrase was later borrowed for the long, twiggy-legged insect that mimics one, because it looked exactly like what it was named after.

insect disguise
Also a bug that cosplays as a twig to survive
load transfer
Cuts hip and knee joint stress by up to 25 percent
correct height
Handle should align with your wrist crease, not your palm
wrong hand myth
Hold it opposite the weak leg, not on its same side
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