Chuckle...I do hope it is helpful to my students.
Really? If you simply say to your students, "When you have it, you know it," how does that help them?
Also, and I'm not saying this is true in your case, but phrases like "When you have it, you know it" can
be a complete copout -- in fact, I think it's unfortunately true that when dealing with less concrete aspects of the martial arts, such phrases are more likely to be a copout than an honest description.