When I arrived at work this morning I discovered a yellow box on my chair. Further investigation revealed that it was a box of Kraft Oreo-type Handisnacks. For the uninitiated, Handisnacks are traditionally a combo-pack of cracker-sticks and a whipped cheese-like product for dipping. These Handisnacks, however, consist of Oreo sticks and a whippy icing-like substance for dipping. The box was unopened and contains "15 single-snack snack-packs".

So what's the problem, you might ask?
No problem, I might answer, except that I don't know who left the Handisnacks.
And that lack of knowledge is absolutely killing me!

I've asked everyone at the office that I consider to be even a remotely plausible suspect. Everyone has responded with a variation on the following: an initial reaction of confusion tinged with fear, the question 'What is a Handisnack?', and, ultimately, a denial that they left me the Handisnacks.

I appreciate the Handisnacks.
I ate one pack.
It was yummy.

But the questions linger:
Who left me the Handisnacks?
Why did they leave me the Handisnacks?
And why didn't they leave some sort of explanatory note?

Any leads would be appreciated.
Reward: One Handisnack single-snack snack-pack.