UK/Aus/NZ slang for:
1. Someone excessively and annoyingly pretentious and/or false, with a strong likelihood of working in the creative industries, especially "new media". Very high populations of wankers are to be found in certain areas of London including Shoreditch and Hoxton; see also Shoreditch twat
2. Someone with a faintly sociopathic lack of regard for other people; see also arsehole
3. Someone useless, inefficient or time-wasting, especially in a place or work and/or position of responsibility.
4. A general term of abuse.
5. Someone who masturbates.
1. He spent twenty minutes telling me about the studio's new pathways they're developing in innovative synergistic blue-sky-media treatment concepts. In a fake Cockney-geezer accent. What a fucking wanker.
2. That cunt in the sports car just totally cut me up. What a fucking wanker.
3. He's being paid £25/hour and he just sits there playing Freecell whilst the rest of us do all his work for him, because he's the boss's mate. What a fucking wanker.
4. You're a fucking wanker.
5. You're a fucking wanker.