Cay-ner
-noun;
1. {British Slang};
a person who smokes copious amounts of Marijuana. A person who is particularly high on Marijuana might be said to be 'K'ned'.
1. ''Oi, pass the spliff, K'ner''
2. ''Go easy on the weed, you K'ner''
3. ''Easy K'ner, coming down the park for a jiff?''