Sometimes it's just not your day.
Some people consider themselves to be just plain unlucky.
Gainus of Icecrown posted a thread on "Murphy's Law," as it applies to World of Warcraft. Murphy's law states
"Whatever can go wrong will go wrong, and at the worst possible time, in the worst possible way."
This particular adage is regularly applied in situations of irony and coincidence, in much of Western Culture.
The original poster noted "Every time I get to that point in 2v2 arena where a psychic scream will let me get off 2-3 mana burns, my fear makes my target run in a perfect L, away from me and behind a pillar before I can even get off 1 cast. It's like that's the exact path they would have taken if they weren't feared."