Man, this sort of thing happens to me all the time. Just the other day I was buying some Crisco at the local grocery store at about 2 am, and out of nowhere some knife wielding, cross dressing truckers just came at me. Luckily I was able to defend with the Crisco tub and deflect the majority of their attacks, although one of them got me with a thrust right in the right arm. After I was wounded I didn't have any other choice but to lather myself in the Crisco, the tub now punctured with holes. I held it above my head like when Link does when he finds an item in The Legend of Zelda, let my anger consume me to heat the Crisco, and just let the divine vegetable fat pour all over my body. After that, they didn't stand a chance. Their blades slid right off, and they couldn't grab me for anything. I was a slippery snake. I recommend always carrying a small baggy of Crisco on you, especially if there is a legitimate fear of a villain pursuing you for a magical stone or any other device. It can really get you out of a jam, and make you nearly impossible to restrain. However, if the other person has a hot knife you're kind of screwed. It cuts right through the Crisco, and in some cases will even cause it to boil and burn your skin. There's never a 100% sure chance in self defense situations unfortunately, even with Crisco.