In our Combatives classes at some point in our week of trainng we will introduce a taser. The instructor will secretly slip it to someone, you never know who and then when you are fighting they will pull it out and shock you with it.
It is amazing how it motivates an awareness towards watching for weapons.
Funny...I posted something similar (using a wooden tanto) not long ago, and was accused of belonging to a cult...
You sure that doesn't equal assault?