Who has not Wank at least one time in thier life?
Wanker is a term that literally means "one who wanks (masturbates)" but has since become a general insult. It is a pejorative term of English origin common in Britain and other parts of the English-speaking world, including Ireland, Australia and New Zealand. It initially referred to an "onanist" and is synonymous with the word tosser.
The terms wank and wanker originated in British slang during the late 19th and early 20th century. In modern usage it is usually a general term of contempt rather than a commentary on sexual habits. Wanker has similar meanings and overtones to American pejoratives like jerk or jerk-off. More generally, wanker can carry suggestions of egotistical and self-indulgent behaviour and this is the dominant meaning in Australia and New Zealand.
Wanker may be indicated by a one-handed gesture, usually to an audience out of hearing range. It is performed by curling the fingers of the hand into a loose fist and moving the hand back and forth to mime male masturbation, which is equivalent to saying, "that person is a wanker".
In the United States, the term is understood, but rarely used, and then more in a way suggesting the target is an idiot.
Related are terms such as "wanker's colic", for an undiagnosed visceral pain, and "wanker's doom", for excessive masturbation, from slang used in the RAF and British prisons since the 1920s.