Whats the creepiest thing thats ever happened to you?

Mine was when i was out walking one summer evening, i passed an old abandoned stone building that was abandoned for at least 50 years, as i looked in the window i saw a man dressed in all black. I freaked out and ran but as i looked back and saw the side of the building that had no wall, there was now nothing there. I decided to check the building out closer and i as i got in i noticed a cold breeze go across my face (on a hot day with no wind !) Again i ran away