My British friends; what exactly does it mean if you call someone a bell end?

@KiwiBird How do you know that

@nevergiveup I have a head full of trivia.....

@KiwiBird I live just outside Worcester and its the same as any city in any country so i dont agree with your comment

@nevergiveup The trivia point was the village in Worcestershire namely Bell End. The Dickhead comment was in response to the post. If you took that seriously....get a sense of humour.

@KiwiBird I was living in a street called Minge lane. I got plenty of comments lol