The drinks are on you

Londoners, just go and read how the mayor of London pays for his political band standing:

How much did the reception cost and who paid for it?
'It was a few thousand.'

How many thousand?
'A few.'

Who paid this few thousand?
'It came from the Project Development Budget.'

Who finances the Project Development Budget?
'The Greater London Authority.'

Who finances the Greater London Authority?
'Well, you know the answer to that.'