Okay, I started to laugh when I saw this post. But then I remembered the first time I did a flush, I had the same question.
It is an airplane part. Take it outside and see how far it flies. It originally was used to block the hole your tranny dipstick tube is in. When the car gets assembled and the tube is inserted it shoves that "cherry" into the pan and it will never hurt anything.
For those who have fought for it, freedom has a flavor the protected will never know. ~unknown