Topic: Discovered: New and Faster Way of Hammer-Hook-Flying!
This was discovered on November 9, 2013 by Nathan and Purey. You can see later in the video that when timed right, they fly upwards much faster than the conventional way.
The top player hooks the bottom player and both players hammer. Top player hooking the bottom players makes more sense because of Teeworlds' hook treats force elasticity in favor for the person using the hook, therefore going up faster.