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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.

I suppose it all originates from our repressed Victorian sexualities, from back when everybody thought they were the only ones to suffer the secret shame of being an actual wanker.

Most children these days learn the word "wanker" long before they learn its literal meaning.
You're such a wanker.
Oh gosh! How did you know?

He lost both of his hands in a childhood kiting accident.
What a wanker!
by anonymous May 31, 2004
1. term used for someone who jacks off all day.
2. A loser who is 35 and lives with his mom and doesn't have a job.
3. a fuckin' retard
1. get your hands out of your pants you wanker
2. man that guy is such a wanker
3. What a wanker
by Stephanie \'youngin\' April 25, 2003
Comes from the words 'willy' and 'yank' combined. As in yanking ones willy i.e. to masturbate. Also used as a term of insult.
Man: That Garry is such a wanker, he's left the milk out again.
by Georgie_Porgie August 20, 2009
One who wanks; A person who masturbates multiple times in a week or day.

Wanking: Masturbating
Oh God, that track runner is a wanker? And he was WANKING whislt running?! Gross.
by The ORIGINAL Grammer Nazi May 08, 2007
1. This is person who is a complete loser.
2. A person who acts like they have no place in life....at all.
That douche is a total wanker.
by RoD_mAn January 26, 2007
1. A wholly undesirable and/or annoying person (usually male).
2. Someone who frequently masturbates or "wanks".
1. "That Paul fellow, he's a bit of a wanker."
2. "Simon, he's a wanker don't you know?"
by Mernard May 08, 2006
A wanker is always used as someone who is ineffectual or useless. It does not substitute for asshole, bastard, dickhead etc. It´s roots are in the assumtion that someone who is so useless he cannot find another human being to have sexual relations with has to have sex with himself.
Hence the term meaning to be one who masturbates frequently.
Tony Blair is always pandering to the Americans...what a wanker!

He failed his driving test again the fucking wanker!
by Mexcelt March 07, 2006
one who wanks off often
one who acts in a toolish matter
a way to name or insult another if they are a tool or fat or bothersome
look at that guy hes wanking off in the corner

i banged ur hoe last night g

by a. p. gullivar January 04, 2006