Probably a literal one, I like hillwalking and am clumsy
Metaphorically, it's guitar tonewoods. If you've got a solidbody electric guitar you can make the body out of a goddamn breezeblock and it'll sound absolutely fine. Whatever difference the body/neck material makes is negligible compared to strings, scale length, pickups, resistors, and amps. Acoustic guitars are another matter, but for solidbody electrics it is 99% delusion and marketing