Quoting gare bear's mommy:" I am honestly curious about this. If you smoke weed (not medically necessary/not prescribed), and for ... [snip!] ... you have a teenager.. Do you let your teenager smoke too if they want to? Or if you were to catch them smoking would you care?"
Id never smoke with my kids, my kids would never smoke my pot.
If they are honor roll, and have a job and can fund their own, with fully knowledge of how being arrested could impact their life, then whatever.. but i dont allow smoking in my house, period.