I prefer the roller coaster analogy when explaining Bernoulli's laws of fluid motion. A roller coaster has kinetic energy and potential energy and the sum of the two is constant. A roller coaster's potential energy is it's altitude, a fluid's potential energy is it's head.
When a fluid flows, the sum of it's potential energy and kinetic energy is also constant.

Potential energy for the roller coaster = mass X altitude X gravity

Potential energy in fluids = density X head X gravity = pressure