Roll, Pitch and Yaw

Roll, pitch and yaw are three magic words

 which explain how the things fly through the world.
An airplane and its flying on three dimensions 

is a good example about the three motions.
You can visit this interesting link

 How Things Fly  

 Curiosity: 

These motions have relation 

with curious inventions.

  For instance: 

gyroscope, geolocation,

 robotic, animation,...

Clue:   Euler angles 

Image source

Some kids know yaw, pitch, and roll... from cbalmain on Vimeo.