Some of you really don't understand the jinx concept, do you?
It's goes something like this:
If you mention something bad happening and DON'T want it to come true, mentioning it out loud actually increases the odds of Murphy's Law coming into effect. Murphy's Law states that "what can go wrong will go wrong." An ancilliary to that is "What can go wrong will go wrong AT THE WORST POSSILBE MOMENT."
Now, in the reverse and as the ultimate paradox, if you want something bad to happen to an opponent, speaking out loud wishes that GOOD things happen for them will directly increase the odds of the GOOD thing happening and NOT the bad.
That falls under the "Be careful what you wish for" proviso to Murphy's Law.
Clear?