"A chemical substance first synthesized in 1995 in a university lab in the US for purely experimental purposes is now being used by young people around the world to legally achieve a marijuana-like high and is causing alarm among health officials in Europe.

The synthetic substance, JWH-018, a cannabinoid receptor agonist from the aminoalkylindole family, has been found in herbal mixtures sold legally under various 'spice' names, such as Spice Gold and Spice Yucatan Fire. The mixture is sold as incense, but is smoked to get high."

jwh-018 is legal, gives you a high similar to marijuana (four to five times more potent than tetrahydrocannabinol, more commonly known as THC) and will NOT show up in a piss test (simply because they dont test for it...yet)

search around the internet and you can find suppliers of the pure chemical JWH-018, or you could try the 'Spice' products (but why would you when u can get the real deal)

BE CAREFUL!! research the supplier before you buy, find out if the are legit or not...lots of fake shit out there