To perform a tongue tornado all you have to do is find her clitoris(which is just at the top of the slit) and at first slowly and progressively faster make circles with your tongue around it. Dont press too hard, it doesn't take much stimulation
When a girl with a tongue ring is blowing you so vigorously it comes undone and starts dangerously swirling around your dick like debris in a twister.
"Fuck man, things were going alright, but then her tongue ring came out and turned that shit into a tongue tornado. I ended up having to go to the ER."