{noun} - The collective word for a group of "chavs"

Noun. British and Australian slang (vulgar). Singular form of wankers.
1. contemptible people; jerks.
2. insulting term for a masturbator, see tosser and jerk-off.
3. connotation not that masturbating itself is an insult but rather that the person called a "wanker" is so unlikeable that no one would ever be sexually interested in them so the only sexual activity they will ever be involved in is masturbation.

A super/really annoying or irritating person.

Slang.

1) One who masturbates to excess.
2) One who uses the word 'skillz' and takes it seriously.

'one who masturbates their pork sword more than an ordinary person', 'a person who comes across as stuck up or smug'

mouthin someone
someone who wanks (masturbates too much)

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.