Blue Tongue
Toyna: Mama, do you know how we can know if someone is lying
Mama: How?
Toyna: If you are lying your tongue will become blue, if you are telling the truth your tongue will be pink.
Mama: How do you know this?
Toyna: I was joking with my friend in school and she told me you are lying. I asked her, how did she know I was lying. She told me – because your tongue is blue.
Toyna: Mama, now you can know if someone is lying to you.
Mama (thinking): I wish!