It's slang for cocaine. In Britain, there's a meme that some high proportion of banknotes have been used as straws to snort cocaine. https://en.wiktionary.org

It's slang for cocaine. In Britain, there's a meme that some high proportion of banknotes have been used as straws to snort cocaine. https://en.wiktionary.org/wiki/Charlie#Noun_2 https://en.wiktionary.org/wiki/Charlie#Noun_2