Quote:
Originally Posted by Eltbus
is a wanker the same as a plonker
per urbandictionary
1. wanker
6831 up, 1334 down
While "to wank" means "to masturbate", the term "wanker" is seldom if ever used in British slang to denote "one who wanks". It is quite wrong to infer from somebody's being a wanker that they in fact wank (and vice versa), but of course, fair to assume they do in any case. Herein lies the genius of the insult: if you call someone a wanker, it's probably true, but only literally.
sounds pretty damn arbitrary, it's all about usage I guess