My wife has been using martial arts techniques on our children and it's made our lives a lot easier, especially around meal times. She's no martial artist, but has managed to master a technique called sui ren zhi shi, jie ren zhi li - one of the fundamental combat principles of taijiquan. The technique - and it's a killer one - is better known on the net in the really old joke, "That's not a bug - it's a feature!" I love it when this action works, and I want to teach myself how to do it more often.

Especially on the kids.