I think that for some people it's a way to relieve their emotional stress and although I can't relate to those who do self harm It doesn't make you any less of a person. If anything it makes you stronger.
I don't even know. But... according to Google it's- -Slang for an ounce of marijuana or and ounce of "Jay" which "OJ" is short for and "OJ" is also short for orange juice and to show that its high quality weed its called a tropicana because tropicana is the best OJ around