Think of someone lazy. Most likely, you're envisioning a couch potato, lying around and eating instead of doing something meaningful. This doesn't always mean someone is lazy. This could also describe someone who's depressed. The difference is, lazy people want to be lazy. Depressed people, well, they can't help it.
Even though weed is beginning to get legalised in places across the US and out of it, in many places it's still very illegal. It makes you wonder- how is a plant illegal, but more dangerous substances like alcohol and tobacco are completely fine to consume?