You may have come across the term “mouth bubble” when reading about charter schools. Or maybe you have not.

 

But they are real. Here is a picture of charter school children blowing “mouth bubbles.”

 

A reader suggested googling the term, and there was the picture.

 

Children in “no excuses” charter schools are not allowed to speak in the hallways. They are told that if they feel an urge to speak, they should blow a “mouth bubble” instead.

 

And that is what you see in the photo.