Whose opportunity he's talking about remains to be seen.
More laughs
Instead, he's talking about Jaws. Seriously. He says the mayor of Amity Island was right to be sceptical about the shark, even though he turned out to be wrong.
'People need to be educated about risk,' he adds.
(He's going to chat with Dobbo after his speech)
'Whatever you may think about the way we voted, the whole fear stuff is being used to keep us in the Custom Union/ Single Market. Which really makes a mockery of the whole idea of Brexit.'
Johnson says he sees this as a private meeting too. Thousands here in Convention Centre.
Johnson said he had ' serious concerns' even back then. He was Foreign Sec at the time #Brexit
Says he had hoped to influence it in Cabinet but could not.