Look before you leap, or better yet... don't leap at all.
If you ever feel down on yourself for making a dumb comment, take a look at these folks to instantly feel better.
They're anything but smooth criminals.
Don't do what these people do. But you already knew that.
Scientists are trying to help you not look like a dumbass.
Keep practicing that grammar, everyone. You're doing "great!"
How did these things happen? Your guess is as good as ours.
Stupid is as stupid does and these people do it the best.