The (Almost) Perfect Unintended Pun?

Okay, pefection basically doesn't happen within the human realm. Outside the human plane, you've got Plato's Ideal Forms, God's immutable character and will, maybe one or two others I can't think of right now. Inside the human plane, you have chocolate cream pie, chicken tikka masala over basmati rice...I already gotcha, because you're thinking "Those aren't perfect, but [insert something here] is." So anyway, when I say that I've got the "almost" perfect pun, I realize that perfection on this human plane is in the eye of the beholder. The way to assess, of course, is by using the Pun Factors: Fitting, Humor, Context, Depth, and Subtelty (this last I'm not sure is a good factor). This one we'll see works in all but Subtlety.

As I type, I am looking at pine trees, hillsides, and blue skies beyond. No, I'm not looking out the back window of my Phoenix home, but rather of our new weekend getaway home in the mountains north of Phoenix. And when I sleep away from my own comfortable bed, I try to remember to bring my own comfortable pillow. This time, I forgot, thus setting us up for the almost perfect Unintended Pun.

It's perfect for several reasons.

• You actually sleep "over" a pillow--Fitting.
• You use a pillow during sleep--Fitting.
• I had just lain down to sleep when I said the pun--Context
• I had tried to say a different metaphor, but couldn't get the words right, so I switched into the pun-ic metaphor--just plain Awesome.
• Maybe other reasons, which you can help me with.
• And finally, perhaps because I was so tired, but I think more because of the beauty of the pun, I actually laughed out loud-- and I never laugh at my own jokes--Humor

The metaphor I was trying to say was "don't cry over spilled milk." But I was very tired, so the words would not quite form themselves into a coherent sentence. As we know here on the forum, the brain has a way of subconsiously helping us out of our verbal dilemmas, making its associations far better than we could have consiously, thus bringing us to the almost perfect Unintended Pun.

April 27, 2013 As I lay down to sleep resting my head on a cushion not my familiar pillow, I said to myself: "Well, it's not my regular pillow, but I won't lose any sleep over it."

Alas, I in fact did lose sleep over it, or at least near, or on it--the piece of resistance--Depth!

I'd appreciate your grading of the perfection of this pun, as well as submitting more reasons for its beauty and perfection. Thanks for helping me have fun with this.