So I broke down and bought the top-of-the-line Vitamix yesterday. When I opened the box here is what was staring at me:
Turns out the Vitamix is NOT a sex toy. This accessory is called a "tamper" and it is used to shove food back down toward the blade.
However, if you are a Grace and Frankie fan and whipped up a batch of yam lube, you might be able to use this attachment for a purpose other than that for which it was intended.