I was in Starbucks the other day (yes yes, bring on the taunts- I almost didn't post this because I'd have to admit it!) and it seems that someone in corporate has deemed that a skim latte should now be referred to as a "skinny latte." I went to a couple of different locations to see if it was just that one location, but sure enough, skinny lattes everywhere. It's just so transparent- the latte is skinny, so you must be skinny if you're drinking it, or perhaps it's just the "joy" of being able to say the word "skinny" over and over again? 
