Metal cone that sits in the stem of a bong, you light the herbin the cone with a lighter keeping it lit while you pull air through the bong inhailing the smoke.
A crack-head or junky. Its more likely used to describe a free loader or someone who always ask for things and they aint got no money...so you can say a junky
Made by wrapping a length of toilet paper around your hand and twisting one end, the cone is then used for wanking into to enable the evidence to be easily disposed of.
The missus is downstairs. You fancy a quick one off the wrist but sont want to mess the place up. Simple. Into the cone and then into the bog, flush, and no ones the wiser