Tonight's Penny Thought is brought to you by: SHHHH! Don't tell a soul!

Mommy and Penny walk into a grocery store. 
While Mommy grabs a basket, Penny says to Mommy: Mommy, they don't know who we are.
Mommy doesn't respond right away...Penny says again, but a bit louder: Mommy, they DON'T know who we are.
Again, much louder, Penny says:  Mommy! They don't know who we are!!!
Finally Mommy says: Penny, I have no idea what you are talking about.
Penny:  THE HUMANS! They. Don't. Know. WHO. WE. ARE!!!
Mommy looks to see a crowd of eyes staring and it was so quiet the crickets began to chirp.
Mommy whispers to Penny: Shhhh!  It's our secret.