[Jim W N]

This was the 60’s. Were you a teenager in the 60’s when weed (MJ) became popular?

[Jamestown1630]

I was 10 years old in 1963 when the song first came out, and heard it and sang it throughout my teens.

I didn't see it as being about drugs and still don't.

There were certainly popular songs that symbolically referred to drugs in the 1960s; but I've never thought that this was one.

Here, according to Wiki, is what the author of the original lyrics, Leonard Lipton, conveyed about the meaning:

'Lipton was 19 when he wrote the poem that was adapted into the lyrics for the 1963 song "Puff, the Magic Dragon", performed by Peter, Paul and Mary. His inspiration was a 1936 Ogden Nash poem, "The Tale of Custard the Dragon". "Pirates and dragons, back then, were common interests in stories for boys", Lipton said. "The Puff story is really just a lot like Peter Pan." Lipton spent decades denying that the song was about marijuana and believed that the myth was created by New York columnist Dorothy Kilgallen.'