Plan B advises parents to try drugs in order to teach their kids about them.
The singer-and-rapper - who has previously admitted to once smoking heroin but not enjoying it - thinks the best way to educate children about the dangers of drug use is to talk about it from an experienced perspective.
He said: "One way of educating yourself about drugs is doing them. It's true! You wanna warn your kids off, smoke a spliff, experience it!
"It's unhealthy to reject all drugs. They're in our society, commonly used. You need to understand them to protect your kids from them."
Plan B - real name Ben Drew - was exposed to drugs from an early age growing up in the rough Forest Gate area of East London, where he remembers drug addicted prostitutes who looked "like diseased zombies" who would ask his mother for money.
In an interview with Q magazine, the Ill Manors rapper recalled: "I'd go, 'Mum, what was wrong with that person?' and she'd go, 'That's a drug addict, that's why you should never do drugs.' So I had an understanding."