phrase it

Duh, people. Think.
I know I'm probably not completely innocent of the things I will proceed to rant about in a minute, but sometimes a person needs to pretend that they are perfect as to avoid the reality of it all. What's funny is that this is actually one of my other pet peevs, b*tching and moaning about things that you yourself are guilty of (like they way people drive, cough cough)... but we'll ignore that for a sec.

Don't use a saying if you don't know what it is. Even if you think you know how it goes, think about it for a second. If it doesn't seem to make sense, rethink using it.
It's NOT: forever and today
It IS: forever and a day
For instance you may say you'll love someone forever and a day. You are saying you'll love them forever and then a day more even. You're not saying that you'll love them forever and maybe today too.
It's NOT: I could care less.
It IS: I couldn't care less.
You mean to say that you care so little that you are incapable of caring any less. If you say the incorrect statement, you are actually saying that you care a bit, therefore making it possible for you to care less. Man, this one seriously annoys the hell out of me. I'm getting my angry face just typing this shit.

There are millions more of these. I simply cannot think of them at the moment and for this I could not care less.