Ditto to most everyone.
In one aspect, you should think of a knife like a gun.. Dont use it to intimidate someone, only pull it if you plan to kill them.. And of course, after you pull it, give them a chance to reconsider, lol.
Secondly: Unlike a gun, a knife wont intimidate somebody, lol. Ive had two incidents to see this happen, in both cases they took the 'Ill be a badass' route and just became more agressive,"You gonna stab me, bitch? Come on pussy, do it!" One got his ass kicked like in Eggs' story, the other folded and crawled off with the little pride he had left, lol.
Im going to support the pepperspray suggestion, but that baton would be better than a pipe
Now, If you really want a knife, Im going to suggest the KA-BAR, or the Seal Knife 2000. A bit pricey, but good to learn with until you can decide on the design to use for the custom knife/knives you'll make for yourself later.
Ok.. maybe thats just me
