I took another glance out the window. Yes, there was definitely someone hiding behind my tool shed. Normally, I would ignore such things - they happened often enough, and it was unusual for the lurker to do me any serious damage. However, as I casually watched, I caught sight of the man's face, and there was something eerily familiar about it. Slipping my stab vest on under a jacket, I went outside to investigate.
There was no reply. There was however, a faint squeal as the man retreated further into the tree's shadow. I was not put on, and crouched down. I stretched out my hand to offer the man some bird seed, in case he was nervous. After a moment, he emerged. Shock overcame me as I looked at him, and I dropped the bird seed all over the lawn. I must remember to tidy it up before it takes root and grows birds.
It was now no surprise why the man before me was familiar - It was me! Sure, I looked a few minutes older, and worry had spread across my handsome face, but it was certainly me! Still, I had to be certain.
"Are you me?" I asked. It seemed a good, if somewhat bland, way of discovering the truth.
"Yes," He replied. "I'm from the future. But... [And here he looked really worried] We shouldn't meet! If two of us exist at the same time, the space-time continuum..."
He trailed off here, whimpering slightly.
"But... Where did you come from?" I asked. Again, boring but straight to the point.
"In two minutes, you'll fall through a time vortex in your kitchen sink. You'll land over the wall, about 5 minutes ago. Quick! Go away. I can already feel the fabric of reality tearing!"
I have messed with the space-time continuum before though, and it doesn't worry me. Obviously, I'm not worried. I think I might do the dishes in fact.