Fake Pinch
When holding down the shift key fake pinch will intercept all touch move commands and trigger them with a mock two finger touch event. It does this by adding an extra object on the touches array that is passed with a normal touch move event.
$body.trigger({
type: 'touchmove',
originalEvent: {touches: touches},
touches: touches
});
Fake pinch should work with jQuery or Zepto.