For those who want to get ridiculously fucked in 1 hit off pretty much any grade pot - a gravity bong bubbler. The absolute thickest smoke you could possibly imagine. It will make you cough until you cry or puke or both. It's fucking amazing.
Attach a straw to the bowlpiece in the gravity bong and let it hang down into the water, so as you pull up, the smoke is filtered through the water, as it would be in a bubbler. Mindblowing, painful, and awesome.