Spiritually speaking: could I legally just set up a faith that is totally bogus?

And say we have to smoke weed every week or we'll go to hell as an excuse if a policeman tries to arrest me for marijuana? I mean Rastas are allowed to do it and who is the government to tell us what a proper religion is or if they're ok? They do it so I'm guessing I could call my religion say norsism and we believe in God and a hell but the only reason God made pot was to smoke it in his name and to not do so would be an insult to humanity? I'm not saying I believe this or anything, I'm just asking the requirements for a religion agknowledged my the Government.