Some things that irritate me are:
-People who drive too slow
-People who don't know how to merge...jeeze!
-Stupid Baylor students who ram their car door into mine
-A lady I work with, Sheila, who thinks that current technology is the devil and that society has gone to pot.
-Democrats who say they have a plan to fix the economy, yet don't make any attempt to explain it...see if you'll get my vote
-Politicians that want you to vote for them just because "I'm not like Bush."
-People who think of my generation with disdain just because of a few bad apples
-Racists....period
-The fact that H-E-B doesn't carry my favorite flavor of yogurt.  Everyone loves Peach Cobbler!!!
-That potatoes aren't nutritious
-That fall and spring aren't the only seasons in a year
-Because I made something of myself I am now seen as an outcast at my high school
-Once again that lady I work with just because she's satan and makes my day horrible
-Snot...uncontrollable snot

If I think of more, I'll keep you in touch.  Feel free to add to my irritating list!