Rain is among many slang terms for heroin. A tape was ‘unearthed’ from a 1966 Robert Shelton interview where Dylan claims he was a heroin addict. Of course, bring your grain of salt to any Dylan admissions during this time.
“I kicked a heroin habit in New York City. I got very, very strung out for a while, I mean really, very strung out. And I kicked the habit. I had about a $25-a-day habit and I kicked it.”
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