This is an actual conversation I overheard between my wife and my little boy today. 

“Mommy look – ah, ah, achoo!”

“Was that a fake sneeze?”  She asked smiling.

“Don’t say that dirty word!”

“That’s not a dirty word, Devin.  ‘Fake’ means pretend or not real.”  He thought about it.

“Mommy I’m not your friend.  I’m not talking to you.  You have a stinky mouth.”

And he stopped talking her.