John knows everyone

John at work brags about him knowing everyone.
His boss, Mike, is quite mad at him, and one day he says "It's impossible that you know everyone on Earth",
but John replies "That's not true, I'll prove it to you, just says a name".
Mike, quite confident, replies "President Obama".
"Ah, Barack, an old friend. Let's take a flight, we are going there to meet him".
Once they arrived at the 1600 Pennsylvania Avenue, John enters the White House, greetings all the security guys.
Then at the White Office they meet with Obama and have a nice chat.
Mike is surprised, but John continues to challenge him, so he ask to meet Bill Gates.
After few hours of flight they arrive in California and meet with the tech tycoon.
Mike is furious, so he challenge John to meet the Pope.
"Oh yeah, it's a long time since I saw the Pope, I'll visit him".
They take a flight to Rome and then a cab to the Vatican City.
Once there John says "There's to much crowd, the Pope will never see me, wait here, I'll go up to meet him and then we will go to the window, so you will see us".
John goes inside the buildings and then he meet the Pope, but when they appear at the window, John see chaos and an ambulance where Mike was.
He rushes down the stairs and see Mike lying down.
"Are you ok boss? What happened?"
"Oh, I had bout when you with the Pope appeared at the window and the guy next to me asked