response: Not sure but piercing the tongue has declined in popularity since 2011 going from the second to fourth most popular piercing.
history: I have ten piercings all over my body. Wow! So did you know that ear and nose piercings are widespread even throughout history? That's interesting. Do you know how long people have been piercing their bodies? The history isn't very well known but there is still a lot of evidence that body piercing has been practiced since ancient times. Do you know why people pierce their bodies? Is it just for decoration or what?
knowledge: While the tongue  remains a popular site to pierce in the Western world, it has declined in popularity since 2011, going from the second to the fourth most popular body piercing for both men and women in England as of March 2015.