Oh, I'm tempted to say "you can't" and let you be hoist on your own proverbial petard, as they say. Really, you should think about the fact that everything you post, everything you write, everything you say online is there permanently. You can delete it from your Wall, but it's in an archive somewhere, in the Facebook database, etc. It's the great duplicitousness of the Web: while things seem to be ephemeral, nothing really is. Everything has permanence.

But...

It's not really my job to be a relationship counselor or to lecture you (or is it too late? :-) so let's look at how to remove a Wall post / status update on Facebook, shall we?

What's confusing is that you can only delete your status updates on your own profile page, not on the news feed page where you see what you've written intermingled with what your friends and associates are involved with. Let me show you...

Okay, so maybe I shouldn't be so critical of Susie, but still, she does wear weird clothes! Nonetheless, I want to remove this update, but as you can see from where the cursor is located, there's no delete "X" to make it easy.

Instead, I need to click on my name on the top left:

Once I'm on my own Wall, then I can see the status update again:

More importantly, I can delete it:

No, really, Facebook, I want to delete this wall post and avoid having poor Susie feel even more embarrassed than she does having to dress in such odd clothes:

Susie aside, now you can see how to make that angry status update you wrote vanish without a trace. Good luck!