This trick can be used on any object that contains an explosion or jump boost. This includes: Blastpoints, Jump-pads, and Gravity changers.

It is very simple, you only need to tap the screen to jump at the same time you hit the item that boosts you.

You will be launched higher in the air thanks to both the explosion and the jump adding together into or giant boost.

The difference can be seen here:

This can be useful in many levels to skip doing several smaller jumps and climb treacherous heights which can shave many seconds off of any given level (if used correctly).