People who don't know how to use foglights...
I was driving my Mazda3 around a bit at night a few nights ago, and I swear, people have serious abusive-issues when it comes to using foglights. This guy in an Audi had his headlights turned OFF, yet his tiny, worthless foglights turned ON. I hardly saw him coming because the lack of his lights. Learn to drive, buddy. I also hate drivers - especially Mazda3 drivers - that drive with both their headlights and foglights turned on at night - even without any fog. I know foglights are cool and sporty and all, but there's no need to blind other drivers by turning on every light possible on your front-end. I've used my foglights about 3 times in 5 months - all 3 times when there actually was heavy fog. I have never seen a reason to use foglights and the theory that you can "see more" with them on is pretty debatable.
No offense to those of you on here that love to drive with your fog lights 24/7, but remind yourself that I'm not the only driver annoyed by others using foglights when there's no need to. And - if you're one of those guys that drives with foglights on and headlights off - get a grip, seriously.