There was a tickle on one of the fingers of my right hand. A fly. I wiggled my finger and it flew away. A minute later it was back. Wiggled again. Flew away. The third time I was irritated, opened my eyes, and found it wasn't a fly after all. The young girl sitting in front of me was rocking back and just a strand or two of her long hair was touching my finger. I closed my eyes. Her hair touched my finger and my initial reaction was - ahh, that's nice.
How foolish the mind. The feeling was irritating when I thought it was a fly, pleasant when connected with a pretty girl.
So easy to fool.