Letter from a friend:

All I can say is WOAH! I don't really know how much was smoked. It was a little smaller than the head of a match.

I sat in my bed with my bubbler in hand and my lighter in the other. I slowly headed the bowl from a semi-far distance away. Soon a kind of harsh vapor filled my bubbler. I slowly inhaled clearing the bubbler (I actually didn't mind the taste, I kind of liked it hehe). After 20 or so second I exhaled. I then inhaled another bubbler full of the vapor. Waited another 20 seconds and exhaled. I then thought maybe I didn't really get all that much because nothing was happening. So I took one more lung-full and held from maybe 10 seconds when it hit me.

I felt my body slowly begin to vibrate then WHAM! it felt like I had been tied to a small rocket. (Note: I had my eyes open at this point). Soon I forgot about the intense feeling of being catapulted into space and noticed the feeling like I was being watched. It felt as if there were "Doctors" watching me. Not the traditional "Doctors" either but rather other-worldly entities. The feeling was very intense but yet I couldn't see them with my open eyes. So I closed my eyes in hope to see these entities. The closed eye visuals were of a square tunnel of ever-changing colors. I pushed forward though this "tunnel" trying to get to the end thinking maybe, just maybe, I would reach the light at the end and enter then realm of these entities. I was so close to the end of this tunnel when it started to fade away. I came down and noticed a different radiant glow on the objects around me. I said I was down but I still felt high.

Quoted from a recent link here on the buddah law.

"Some people’s Third Eyes aren’t blocked, though. They have a passageway, but they
haven’t practiced qigong before and didn’t have any energy before. So when they start to
practice, a black, round thing suddenly shows up in front of their eyes. After they’ve been
practicing a while it gradually starts to turn white, and from white it gradually brightens,
getting brighter and brighter, and the person’s eyes get a little dazzled from it. So some
30
people say, “I see the sun” or “I see the moon.” Actually, that wasn’t the sun you saw,
and that wasn’t the moon. So then what was it you saw? It was that passageway of yours.
Some people make breakthroughs in level more quickly, and after the Eye is put into
them they can see things directly. It’s really hard for some other people, though, and
whenever they do the exercises they run outward along this passageway, which is like a
tunnel or in some cases a well. They even feel like they’re running outward when they’re
asleep. Some people feel like they’re riding a horse fast, some like they’re flying, some
like they’re running, and some like they’re rushing outward in a car. But they always feel
that they can’t rush to the end of it. That’s because it’s really hard for a person to open his
Third Eye on his own. Daoists consider the human body a small universe. Then if it’s a
small universe, let’s think about it, it’s got to be thousands of miles from the forehead to
the pineal gland. That’s why they always feel like they’re rushing outward but can’t ever
reach the end.
So Daoists consider the human body a small universe, and that makes a lot of sense.
They’re not saying that its compositional structure is like the universe’s, they’re not
talking about the form our body takes in this material dimension."