It looks like with Corbyn there will be no more Mr Nice Guy dealing, no more Oxbridge handshakes, no more public school chummery, no more fakery, no more acting - now it's real and the Tories aren't sure what is coming.
"Senior Tories have no idea what Mr Cameron will face this week at Prime Minister??s Questions ?? making it almost impossible to prepare.
Government whips also fear that the daily backroom deals between the Tories and Labour that allow bills to pass through the Commons may stop.
??We simply have no idea how a Corbyn-led Labour Party will function,?? one Conservative source said. ??All channels of communication could close.??
The Tories will focus many of their attacks on Tom Watson, Labour??s new deputy leader.
They will seek to paint Mr Watson ?? and the union bosses who helped elect Mr Corbyn - as the real powerbase in the Labour Party.
Many aides to Mr Cameron were privately hoping that Andy Burnham would win the leadership contest.
The burst of jubilation in Tory circles in the wake of Mr Corbyn??s victory may be short-lived.
Mr Corbyn has already made clear that the normal rules of Opposition do not apply to him. Tackling him head-on could be more of a challenge for the Conservatives than they realise."
www.telegraph.co.uk/news/politics/Jeremy_Corbyn/11862105/David-Cameron-faces-dilemma-over-Jeremy-Corbyn-election.html