5 fun facts about your mouth! ๐ ๐ Without saliva, we would not be able to taste anything. ๐ The inside of your mouth contains as many bacteria as there are people on Earth. ๐ The tongue is the only muscle in the human body that works without any support from the skeleton. ๐ Relative to its size, the tongue is the strongest muscle in the human body! ๐ The bumps on the tongue are called papillae!