the.com/lameness

means The quality of being feeble, uncool, or disappointing — a weak attempt that falls flat.

from Rooted in Old English 'lama,' meaning crippled or disabled in the limbs — a straightforwardly physical word. Over centuries the sense limped (fittingly) into metaphor: something 'lame' became anything hobbled, weak, or unconvincing — an excuse, a joke, a plan — that couldn't stand on its own two feet. The slang sense of 'uncool' is a 20th-century extension of that same old limp.