Trailing

Slang for smoking the prescription drug Oxycontin. The drug is smoked by splitting up the pill, usually in fourths, then placing a piece on foil. The pill is then slid slowing down the foil while following it underneath with a lighter. The smoke or gas released is then sucked up with some sort of straw. A black trail is left on the foil where the drug was being lit hence the name "trailing."