Procedural physics can be hilarious sometimes. I finished someone off in Arkham with a straight jab to the stomach, but the fist connected a bit lower. Right in the dick. After that, the game just tells the ragdoll to hold the effected area and not to go limp for a few seconds. So he goes flying across the room, lands on his feet and his ragdoll dances around holding its balls for a few seconds before flopping onto its side and curling up in the fetal position.
And to think, it wasn't so long ago we had the very first dick shot animation in Goldeneye 64. We've come a long way.