A quantum leap, in the simplest terms, is when you jump so hard, so fast, so uncontrollably, that you create a temporary rift in the space-time continuum.
This is not a drill. It's also not just a fancy way of saying "you tripped".
Cooler, more stylish, and infinitely more fun than regular jumping. Plus, you get bonus points for creativity!
Warning: Quantum Leaping can be hazardous to your health. Do not attempt without proper training or a functioning safety net.