Lyric discussion by ast3r3x 

Cover art for It's  A Plant lyrics by Keller Williams

I think this song is pretty obvious what it means. It's just him saying how ridiculous it is that pot is illegal. It has so many beneficial uses that continuing a ban that was originally started because of discrimination is ludicrous.

I don't support smoking, but I think it has it's legitimate purposes, and this song goes into a few of them.