1) At work we had some regulations change and their reasoning in part was that there are sometimes animals in this hallway at work and I said "that's stupid, we almost never have animals running down the hall." Next day, I let an animal loose in the hall (but caught it very quickly).
2) Well, this one I can't really post details of, but I said "I am not afraid of being bitten" and then I was bitten about 10 minutes later (not hard but still)
On the upside though, the roomie couldn't figure out why her horn wasn't working, but after the crash, the horn works fine. Just call me Ms. FixIt. Lol