I was out walking with my 4-year-old Granddaughter.
She picked up something off of the ground and
started to put it in her mouth. I took the item away
from her and I asked her not to do that.
"Why," my Granddaughter asked.
"Because it's been on the ground; you don't know
where it's been, it's dirty, and probably has germs,"
I replied.

At this point, my Granddaughter looked at me with total
admiration and asked, "Grandma, how do you know all this
stuff? You are so smart."
I was thinking quickly. "All Grandmas know this stuff.
It's on the Grandma Test. You have to know it, or they
don't let you be a Grandma."
We walked along in silence for 2 or 3 minutes, but she
was evidently pondering this new information.

"Ooh... I get it!" she beamed, "So if you don't pass the
test you have to be the Grandpa."
"Exaaaactly," I replied with a big smile on my face.