just plain hysterical

Zoey, as of late, has been having trouble the the s-m combination, and it comes out as an f sound, instead.  For example, the word smile comes out as file. She tries really hard, but just can't quite get that combination.

So, tonight we were driving home from dinner and Zoey says, "Hey, look! It's the car place where daddy's car is being fixed!"

M: Zoey, you are so stinkin' smart!

Z: I am NOT stinkin' fart! I am just fart!

Poor girl. She had no idea why Brian and I couldn't stop laughing.