So, I looked it up at Merriam-Webster's online dictionary and found this:
to smile in an affected or smug manner (with smug using the "highly self-satisfied" definition)
Now if I looked at the etimology of the word (oh yeah, score one for the linguistics class I had to take), I'd have to note that in Old English - smerian - the word meant "to laugh." Umm... that changes the look I should be getting from my photo victim entirely.
Ya is the master of expression... so there is a plethora of random faces to choose from... but what the heck is a smirk, really?
I went to yahoo's education site and their dictionary included the following "related words":
fleer, repress, guilty
And then I was totally confused. I thought about using one of several close ups, but decided that to really be a smirk, there should be a story in the picture. The clock, however, decided it was bedtime, so I eenie-meenie'd my choice.