Pii Chon, please believe me please don't use the sword for any emergency, its very messy and the scene you not like to remember, please choose something cleaner like a Glock.
Use this; plenty on sale @ Patpong and Sukhumvit:
![The_Bull_Stun_Gun.jpg](http://www.swordsswords.com/ProductImages/s/The_Bull_Stun_Gun.jpg)
Btw, is it an offence to possess such a thing ?