Caused when someone is so high on speed that they are unable to talk, and it looks
like their tongue has a ball on the end of it.
This was derived from a man that KoRn knew, as they would
play at his club. They called him
Ball Tongue for that reason, as he was the one to start them on doing speed. They later produced a song with the same name on their first album.
It has nothing to do with licking balls, or any other sexual innuendos.