If you're a pianist, you would know when a fellow pianist strikes the wrong chord.
If you're a Christian from a brethren assembly, you will probably be able to say, "predestination" before your Bible study teacher says it. (and then shrug casually when everyone else asks, "eh how you know?")
If you're even the most basic of movie freaks, you would probably laugh when Arnold Schwarzenegger says, "I am back!" in The Expendables 2, and wonder what kind of movies your friends have been watching because they obviously didn't get it.
"A man had three strands of hair..." - if you've heard me tell this one before, you'll probably either do a face-palm or start giggling, depending on the kind of person you are.
You know how you just know sometimes, when something isn't right?
How 'bout when you know when something isn't right, but nobody else believes you?
This one is a bit tricky.
Because if you don't do it right, you come off as being very proud and judgmental.
And that's why,
Even if you're that pianist, you usually let that wrong chord go.
If you're that Christian from a brethren assembly, you usually bite your tongue during Bible study. Or if you do say "predestination" involuntarily, you shrug it off and say, "wild guess."
If you're that movie freak, you'll either go all the way to explain what happened in The Terminator, or just apologize for laughing so hard.
If you're that person listening to that statement you've heard before... well. Just do what you do. =P
Sometimes you've said what you need to say, and know that saying more will just do more damage.
So just let it go.
Let people make their mistakes.
As much as you'd like to say, "I told you so" when it happens, you know you've got to step in to make the best of that mistake.
And just live with the fact that...
You'll really never get to say, "I told you so".