"Toxic" means poisonous ... only alcohol is that.
Why do you think it's relevant to legality that alcohol takes a few minutes to take effect while marijuana is much faster?
It's even toxic to pets!
http://72.14.203.104/search?q=cache:tx5Hgr6SyfMJ:www.marvistavet.com/html/body_marijuana_toxicity.html+Toxicity+Marijuana&hl=en&gl=us&ct=clnk&cd=2