You were on vacation with your family when they left you behind. It shouldn't have been much of an issue, you were an adult.
Then you realized that you had no translator and you could speak very limited English.
As you roam the streets of London, you accidentally bumped into a larger man -- making him spill his hot coffee all over his frontside.
He turned to you with a pointed look, but softened immediately at your ramblings -- which he assumed to be an apology. Whatever it was, he couldn't understand it.
Against his better judgement, he decided to take you back to his base of operations. He would've brought you home, but he figured you'd be safer here until he knew your story.
"John," he pointed at himself before pointing at you, as if asking for your name.