My friend Sarah has some of the worst grammar (thank god she'll never read this). She says things like "her and me were going to go to.." and also she says "conversate" ALL THE TIME instead of "converse." Now, I know that "conversate" is now considered a word (slang) but she doesn't really use any other slang. She actually thinks it's a legitimate word.

Almost all of my friends save one uses "I" when they should be using "me." Actually, almost everyone I have ever heard speak including writing and literature teachers uses it incorrectly. Example: "Would you like to come to the park with Lance and I?" UGH! NO! It's "Lance and me" ME ME MEMEMEME!

That's one of my pet peeves.

Also, I cannot abide the trend of inappropriate apostrophes. But that's not grammar exactly. I've corrected three of my most recent bosses on their use of 's.