T.P. Grant outlines why you should stop worrying and learn to love the knee reap.
In the jiu jitsu community no two words can strike fear into a room quite like "knee reaping". The simple placement of one leg in a position of leg entanglement has been declared worthy of an immediate disqualification in many jiu jitsu competitions.
The rationale is simple enough, that it puts dangerous pressure on the knee of the trapped leg. Debates rage around the position and much of the perceived danger of the position comes just from the fact that is a banned technique.