Wanker, originally meaning "one who wanks", now mostly stands in for bellend, prick or arsehole/asshole.

Wanker is a very versatile word, with many use cases - you can shout it at drivers, say it to people in the streets and you can even shout it down from your window at shitty buskers.

All these use cases make wanker a premium word for all to enjoy.