My understanding of Labour party policy on Brexit is that its leader firmly support the UK leaving the European Union (EU), so long as the country continues to enjoy all the benefits of being a member of the EU.
Which sounds like the political equivalent of being a little bit pregnant, if you ask me - it's the same as having your slice of cake and eating it at the same time.
In the first test of his leadership since the general election, Jeremy Corbyn yesterday ordered Labour MPs to abstain over a vote in the House of Commons to stay within the Single Market and the Customs Union, both of which have major implications for jobs and future growth in the UK economy.
Three shadow ministers (Ruth Cadbury, Andy Slaughter and Catherine West), were sacked for defying their leader's order and and a fourth (Daniel Zeichner) resigned before he could be shown the door.
UK politics has an 'Alice in Wonderland' feel to it these days with arch-rebel Jeremy Corbyn demanding loyalty from his troops and believing that 'six impossible things before breakfast' is perfectly realistic.
Which is complete nonsense, of course, as the UK's mad march towards Brexit will show us all in the weeks and months ahead.
A Question of Leadership (29/06/17)
Now given that the majority of Labour supporters voted to remain in the Europe, along with the majority of Scots and a majority of young voters, you would think Jezza would set aside his personal hostility towards the EU and support this amendment from one of his own backbenchers, Labour MP Chuka Umanna.
Because an awful lot of water has flowed under the bridge since the EU referendum in June 2016 which never specifically asked voters for their views on the pros and cons of leaving the Single Market and/or the Customs Union.