Minor Issues, Major Implications

I have a habit of keeping things I don't need; this annoys my wife. Once she found another receipt she didn't think necessary and I snipped. "I saw that. You rolled your eyes at me." And with a smile, she pointed and said, "I rolled one. This one." Now, what can we learn from this? Minor issues can escalate quickly and have major implications. That, even the smallest nonverbal behavior communicates a lot so be careful. And that an honest, but humorous confession covers a multitude of sins.