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Press the numbers on your keyboard to make Tennis Ball say your favorite fun fact! (You should be on a desktop browser.) For example, press 0 then 4 then 7 to say "Isaac Newton discovered gravity!" And yes, I finally figured out a name for these types of videos: "soundboard videos"! I like that name because it reminds me of DJs who press the buttons to make sounds come out. MUSIC Music ("Fig Leaf Times Two") by Kevin MacLeod (http://incompetech.com), licensed under the Creative Commons: By Attribution 3.0 license (https://creativecommons.org/licenses/by/3.0/). https://www.youtube.com/watch?v=UcOXTd9Ix7g&t=0s