My little boy collided with something yesterday while playing with a toy in his mouth. The toy got rammed into his mouth and there was some bleeding under his tongue.
I had a look at the damage today and can see that the frenum is shallowly severed. There is a break. The point where it separates is white. He is able to eat normally.
Being aware of kechari from this forum I said "Maybe after this, you will be able to stick your tongue out further, or stick it back further."
He said "Do you know, mama, that I can stick my tongue into the holes in my throat." He has been doing this for a long time, before the injury, apparently.
I asked what it feels like to do that - he just shrugged like it was not big deal.
Just had to tell this story where people know what kechari mudra is.