Purl oriented centered double decrease- tutorial

Recently, while designing a shawl, I realized that I needed a way to do a knit side oriented double decrease but from the purl side (the stitch is worked on the purl side, but the double decrease shows up on the knit side).  Happily, I found a blog with a fairly simple explanation (plus a great photo tutorial) of how to do this.  Yay!

For many knitters, this might be the end of it, but it got me to wondering.  How would a knitter do a double decrease that was purl side oriented?

While fleegle's trick is super cool, on the purl side it look like an elaborate right leaning decrease.  I (and possibly you) want to be able to make a double decrease that is centered on the purl side.  But, alas, google was not helpful.  A search yielded no useful results (if I missed a tutorial for this, please let me know.) 

The knitting nerd in me (and that's a large part of me) insisted that I figure it out.

It turns out to be fairly simple to do.  All you need to do is: p2tog, s1, psso. 

I found slipping the stitch over on the right needle to be a bit tricky, so I moved the the stitches onto the left needle for slipping.  The less tricky (for me at least) way is what I've included in the photo tutorial below.

PSO-CDD (in 4 easy-ish steps):

1) Purl two together.

2) Move stitch from right needle to left needle.

 3) Pass slipped stitch over.

4) Move stitch back onto right needle.

Purl side view:

Knit side view:

So simple, yet so complex looking (as is much of knitting).  I hope this has helped you in your search to become a more nerdy knitter.

Just me, huh?
Joyce

P.S. I was pretty excited about my status as a nerdy knitter when I figured this out (even though I'm pretty sure that I'm not the only one who has).  So I texted TK and told her that I'd figured out how to do a purl side oriented centered double decrease.  A short time later I got a text in return that said, "Is it p2tog, s1, psso?"  Yep, ego deflated.  Tell me again why I hang out with such smart knitters?