Just be mean to them until it works, like a 3rd grader.
14. Eat certain kinds of fruit
How to eat a Kiwi might as well be astrophysics. Don't even start with Starfruit.
15. Throw a ball
Like any kind of ball, dude. A baseball, a basketball, a tennis ball. You don’t even need to be a ball savante, richly experienced in any and all ball-throwing, a ballaissance man, if you will. Some people are baffled by the basic mechanics of any and all throwing motions with a spherical or semi-spherical object.