The Facepalm

I have a love/hate relationship with editors. They do help me catch a lot of errors that happen when you just fly away at the keyboard. For instance when you type they're, their or there incorrectly. But they also catch things that I kind of should be smarter about.

When these edits come across my e-mail. I actually facepalm. Not just think it, I do it. I think I'm trying to knock out the duh that seems to be lodged in my brain.

So this post today, I'd like comments. In writing, or in life, what are some of your facepalm moments?