What martial system do you study?

This question is more apropos when meeting other martial artists even if in the same system. You both have some common ground to walk on where you get to know each other and create a relationship necessary to practice well. Again tho, in my view and for me, I would limit it to the system such as:

I practice an Okinawan form of karate called Isshinryu.

That's it, unless someone responds with an "open-ended" question that requires some further explanation I am done. Even then when responding I "TRY" to be short and concise although since it is near and dear to me I tend to express myself a bit more than would be desirable in a lot of cases - yes, I am opinionated and long-winded ... geeze ;-)