You see it all the time.
People with barbells sticking out their tongue.
You may even have one yourself.
But is it safe?
In a word...... NO!
Besides loss of taste and feel there are also other dangers.
Since the mouth can not be kept sterile, as other parts you may pierce,
the chance of infection is greater. The above picture is a very nicely infected tongue.
Cracking your teeth on a tongue ring is also a very real concern. I have treated many cracked teeth from people biting down on tongue rings.
Want another reason?
How about this one.
If you catch your tongue ring on something. You can actually pull it out of your tongue and cause, this......
My suggestion, DON'T DO IT!!!