Yakety-Yak

You've probably heard the saying, "God gave people two ears but only one mouth because they should listen more than they talk."  Of course, some people blather on as if they never heard that.  (Well, they probably didn't, because they were talking.)

Some people will acknowledge that they have two ears and one mouth, but they'll probably point out that the mouth is larger, so they should use it more.

Other people have one mouth but no brain, so they use what they have.