I saw this funny article the other day about this woman who posted on facebook how much she hated her job and her boss. Obviously she didn't remember that she added him as a friend just a few days before. Needless to say, one of the comments to her rant was from her boss... she didn't have to go into work after that.
Often we let our emotions get the better of us... usually to our own embarrassment. Good thing Frank knows that deep down Rex has a big heart. It's in situations like this that we hope for someone to be very forgiving. Hopefully we remember to be that forgiving ourselves!