Board Thread:Questions and Answers/@comment-26138409-20160306224346/@comment-1173941-20160307021634

There's no pain in the way you might understand it. Instead, the sensation of pain is replaced by an intense sense of discomfort. But things like heat and cold are still more-or-less felt as well.

So a kick in the balls won't incapacitate you, but it won't be a very pleasant feeling.