Once upon a time you could pretty much bank on public figures, especially TV people, using good grammar. Such is no longer the case, and poor grammar usage shows up everywhere.
A big problem with many people is that they want to “sound” intelligent, even if they don’t know the rules of grammar very well. For example, they tend to say, “Joe, Bill, and myself went hunting.” If you wouldn’t say, “Myself went hunting,” then I is the correct pronoun. Reflective pronouns must reflect another word, as in, “I went hunting by myself,” or, “I, myself, do not agree,” although it’s easier to just say, “I don’t agree.”
Frequently, especially people speaking in public, think that I sounds more sophisticated than me. “They asked Mary and I about it.” That’s the same as saying, “They asked I about it.” They asked me, so they asked Mary and me.
Him and her went to the movies. Nope! Him didn’t go, so her didn’t go. He went, and she went, so he and she went. However, he went with her, or she went with him. The difference here is that her and/or him are the objects of the preposition, with.
I’m not sure exactly what your stupid means. It must be something you own, because your is a possessive pronoun, as in, “I want your vote.” “You’re stupid,” means, “You are stupid.” Using your stupid just might mean you’re stupid.
What about, “The dog wants it’s bone”? “The dog wants it is bone,” makes no sense. “The dog wants its bone.” Unlike nouns, possessive pronouns do not earn apostrophes. “Take the dog and put its bowl in John’s car.”
While listening to TV I often hear constructions such as, “Joe Smith, he’s the best bowler in the league.” Did these people not listen way back in grade school? “Joe Smith is the best bowler in the league,” is all that needs to be said. Extraneous syntax runs rampant these days!
And then there’s “He’s taller than me,” which is becoming accepted due to ignorance. The completed sentence should read, “He’s taller than I [am].” It’s also generally overlooked when someone says, “It’s only me!” instead of the correct, “It’s only I.” This is because people tend to use object pronouns after to be verbs, in this case, is.
Okay, so you’re thinking, is it correct to say, “Mary would rather go with Sue than me,” or should it be, “Mary would rather go with Sue than I”? Well, in this case, it depends on the meaning. If she would rather go with Sue than go with me, then me is correct. If she would rather go with Sue than I would, then I is correct.
Maybe this isn’t exactly about grammar, but why do people insist on ATM machine, PIN number, and VIN number, to name a few? An automatic teller machine machine? A personal identification number number? A vehicle identification number number? Just stick with ATM, PIN, and VIN. Go to the ATM, insert your card, and enter your PIN. If someone steals your car, give the VIN to the police.
One common error in grammar is to classify people as objects, as in, “He’s the one that scored the winning point.” “He’s the one who scored the winning point,” is correct. I’m not going to discuss whether to use that or which, because it’s obvious that a lot of people are already confused about both grammar and Grandpa.