Pet peeve #2348: People who say things like "Global warming? What global warming?" when it turns out to be cold one morning, or a little colder than normal a little earlier in the year, or whatever. Climate change is incremental, people. One cold morning does not no climate change make.
I especially like it when someone says "global warming? what global warming?" on a cold day, and later comments that winters used to start a lot earlier and be colder/have more snow when they were a kid.
I seem to remember when I grew up that my hometown would get about 2 feet of snow at points throughout the winter.. hardly ever snows there now.
Damn global warming.
(In my defense, we haven't had a proper summer last more than three days here either of the last two years. I want it to warm.)