Join James Haskell's webchat - exclusive to Telegraph subscribers

Rugby careers are always colourful — but few can have been more vivid than James Haskell's.

The former England and Northampton Saints back-rower reveals all in a new book — What a Flanker — which is being exclusively serialised by Telegraph Sport this weekend.

After three days of extracts there will be plenty to discuss — and Telegraph subscribers have a direct line to Haskell himself, with an exclusive webchat at 11.30am on Tuesday September 22.

You can leave your questions using the form below, but make sure to get them in before the cut-off time of 12pm on Monday September 21.

From dwarf tossing in New Zealand at the 2011 World Cup, to the fateful decision to kick for the corner against Wales in the 2015 tournament, Haskell had a front-row seat at some of the most controversial moments in recent England history. This is your opportunity to ask him anything — just scroll to the form at the bottom of this page to leave your questions.

As for the book extracts themselves, we start on Friday with the real story behind the 2011 World Cup shambles — from shooting rabbits to tossing dwarves and an RFU stitch-up.

Day two covers the 2015 World Cup on home soil: from credibility graphs to tedious meetings and angry coaches - Haskell explains that Stuart Lancaster's England was like a school trip. Plus, the day he almost killed Rory Best on a Lions tour.

And finally, on Monday, a triple-extract special: why Eddie Jones is the best England coach Haskell played under  — and not just because he once bought him a luxury massage; why he stripped nude and got covered in gold paint for Stade Francais; and how rugby left him with a broken body ("My fingers pop out and I can't run").