since i dont feel like looking at what everone has writen im gonna tell u what blades, hot knives and just plain ol knife hits are.....well first off...they are all the same! get 2 butter knives and heat them up glowing red(on the end, not the handle) with a torch, fire, etc. put weed on the tip of one (u dont need very much) take the other knife and squeese the weed between the 2 knives and start suckin back those beautiful fumes! it gets u fucked of the first hit....usually anyway....well for me and my friends it does.