Unintended Puns Come in Droves?

Now I'm beginning to wonder if Unintended Puns come in bursts, or if maybe one has heightened awareness of them during certain stretches because of some reason or another.

Over the past two weeks, I've spoken four that I know of, read two in a magazine, and heard another one. I'll tell on myself, especially one that I have actually said before and didn't notice--giving rise to the "heightened awareness" theory.

September 5, 2011
My wife and I are terrible vacation packers. We always take more than we could ever need, resulting in extra luggage, making sure to be prepared for any kind of weather, etc. As we we were leaving from our Labor Day weekend getaway, I was tossing our laundry into a suitcase, not needing to fold anything. I said: "This method of packing suits us."

September 10, 2011
Claire and I were discussing Henry Ford (I think it started when I mentioned that he said you could have any color of Model-T you wanted as long as it was black.) Anyway, Claire remembered that he had the famous interview technique of watching the candidate over dinner. If the person added salt to everything without tasting it first, he wouldn't hire him. Claire thought that seemed a little unfair. I was defending the practice, saying that it didn't mean that Ford didn't like the candidate as a person, but rather thought that the person would make bad business decisions. I said: "He wasn't expressing a distaste for the person."


September 12, 2011
Claire and I were discussing physics, and the various properties of light. In particular, I wanted to point out that light has both wave and matter characteristics. I said: "Light is a different matter."

And now for the one that makes me lean toward the "heightened awareness" theory, because I had said this exact same thing a few weeks before, and not noticed it as an Unintended Pun.

September 6, 2011
A work colleague asked me how things were going. I told him I was beginning to feel more at home in my new role. My new role happens to be working on a team that writes software that will be downloaded into very small computers. In the technology world, we are building what is known as an "embedded system"--the software is embedded into the small computer. I said: "I'm pretty much embedded on the team."

So, in about 10 days, I uttered four Unintended Puns, one of which I had used before and not noticed. That makes me wonder if either the Puns themselves are cyclic, as are so many things in the world, or awareness of them, or I suppose, both. What do you think?