Put a bunch of high grade weed in a plastic, or metal tube squirt a can of butane lighter fluid down the top through the bud, and the budder is the runny stuff that comes out the bottom. Its that simple.
The theory of smoking, and THC concentrating quickly in your blood sounds very scientific, but I know the highest I've ever been was taking THC orally, and trust me I didn't need a guy in a lab coat explaining why I was sitting at the end of some random persons driveway for 4 hours. Thats just where I was walking when it kicked in LOL.