weed laced with dmt? if you hold the lighter to it for too long then it just burns away.. i dont see how you could smoke a dmt laced joint. besides, i dont see how you could smoke it if it was laced, a few puffs and you should be dreaming.. although it would be a total waste personally, too much smoke loss.
yeah... generally speaking, if you were to lace weed with something, you'd
1) soak the bud in a specied amount of substance in a specified amount of volume on a specified amount of weed, giving you a known and desired %/vol.
2) Get a sprayer, dilute the chemical, spray the weed.
Get what I'm saying? The DMT (or pcp, or w.e.tf you put on it) would be spread throughout the whole bud, not just centralized to one small location. Hence, if you rolled a joint, you'd only vaporize the first amount of the chemical, and due to the burning of the weed at a steady temperature, you'd more than likely get a massive hit of whatever it was laced with.