The purpose of thehuman tongue?
The purpose of the tongue is to taste your food \
Brushing with a toothbrush works well, and you can occasionally buy a purpose-built metallic tongue cleaner. You can also use the sides of a spoon. You can use your teeth, brush it with your toothbrush ( you can find tongue cleaners on the back of some tooth brushes), or you can eat allot of fruit (The acid cleans it for you! or even breath freshener