"I know everybody!"

Bob and Jeff are talking amongst themselves, when Bob says "I know every single person in the world."
Jeff says "That's not possible! There's no way you can know everybody in the world."
"Okay," Bob replies with a smug look, "I'll prove it. Let's go see my friend Bill Gates."
With that, they hop in a plane and fly to Medina, Washington and drive to Bill Gates' house.
When they arrive at the front gate, a little screen activates and Bill's face shows up on the screen."
"Bob! It's great to see you again! Please come inside!"
After having lunch with Bill Gates, Jeff still doesn't believe Bob.
"I'm calling bullshit. You knowing Bill Gates was a lucky strike. There's no way you know Obama."
"Let's go say hello, shall we?"
Once again, the two men get into a plane and fly to the White House, where they are greeted by Barack Obama.
"Hi, Bob! How are you? It's been too long."
Bob and Jeff proceeded to have a wonderful dinner with Obama.
After they left, Jeff looked over at Bob.
"I'm amazed, but I'm absolutely sure that you don't know Queen Elizabeth."
"Actually, I was planning on seeing her soon anyway." Bob replies, and as you can probably guess, they got into a plane and flew to London, England.
When they arrived at Buckingham Palace, there was a huge crowd around the stage where Queen Elizabeth does her famous wave.
"Man, she's never going to see me in this crowd!" Bob whined.
"Tell you what," he says as he turns to Jeff, "I'll get into the Palace, and I'll go up on stage with her. That'll prove I know her."
"Fine," Jeff says.
Bob went into the palace, and Jeff waited in this huge crowd for a few minutes. Then, the Queen walked up with Bob and they did the famous wave.
When Bob came back into the crowd, he could see an ambulance with Jeff on a stretcher.
"Jeff!" Bob shouted, "What happened?"
Jeff looked up at Bob and said "When I saw you up on the stage, I was pretty impressed. Then, I passed out when the guy next to me said 'Hey, who's that lady up there with Bob?'"