There is nothing worse than when a person drags you down. However, the act of physically dragging someone across a surface that is bumpy and designed for friction can do some serious damage on the skin. Dragging someone with their back exposed to the road can leave the skin bloody and raw.
This leaves an intense burning sensation, and it is also quite humiliating. Breaking out of it can be quite difficult if the person is stronger and you are physically weak, as the person strong enough to drag you is often just away from the range of your kicks.