Done it too many times.
And Absynth, you don't know what you are talking about.
You are supposed to smoke a bowl of the EXTRACT.
The most popular distributor is Purple Sticky Salvia. They come in 5x, 10x, 20x, 30x, 40x, and even 60x.
You are supposed to smoke a SMALL bowl of the high (40x) stuff with a butane lighter and a short, small pipe, completely roasting the entire bowl in 1 hit. Hold it in for 20-30 seconds, and exhale.
Wait a few seconds, then slip into another dimension
Its fun the first few times, but after the 5th time doing it, its not that great anymore.
Go look up Kratum Root and google "Legal Highs". There are some pretty interesting things out there.... Haha