Stale observations people still think are funny/original/surprising

[private joker]

I don't know if I can describe this topic very well, but every once in a while I hear some jackass make a comment that he thinks is really insightful -- when in fact everyone knows it already and we're sick of hearing about it. It's not news anymore; it's just a cliche.

Two decent examples of this are:

1) "Bob Saget is actually a really dirty, foul-mouthed comedian! Seriously! If you listen to his stand-up, you'd be surprised how R-rated it is!" No, I wouldn't. Everyone knows Saget is filthy. Welcome to 14 years ago.

2) "Alanis Morissette's song "Ironic" is not ironic at all! She misuses the word completely! Did you realize that?" Yes, as did everyone else when the song came out. We know the lyrics are not examples of irony. Can we just forget the song exists now please?

I know I have more, but I can't think of them right now. Care to build a solid list with me?