Right. Where to begin. According to the Sunday Sport, The Guardian "recently announced" that this was the correct way to spell a popular colloquialsm for the tip of a penis.
Here's The Guardian's style guide entry to back it up.
The Sunday Sport attacked this decision in a coruscating editorial that describes The Guardian as the "loss-making house journal of Britain's chattering classes".
This is not the first time the Sunday Sport has expressed outrage over the use of a hyphen in "bellend".
In a furious email to staff earlier this year, editor Nick Appleyard wrote:
For example, last Sunday (July 20) one sub editor came up with the headline: MAN LOSES B*LLOCKS BUT DOCS SAVE HIS BELL-END!
When I saw that page I felt physically sick. There are TWO glaring errors in the above headline that every member of editorial staff should spot straight away. Bollocks is NOT censored, even in headlines, and who the hell puts a hyphen in bellend? I won't name names but you know who you are and you should go back to school.