1. You said that you exhale after 3 seconds therefore are immune to any harmful substances that MAY be in cannabis smoke. This is not possible as we do not exhale 100% of what we inhale in one breath, it would take aprox 3-4 breaths before all of the smoke was exhaled and even then there would be residual particals of smoke left behind in your lungs 3 seconds would be up by then.
hey man... shutup about that...

all he was tryin to say, is that he doesnt hold in smoke... therefore it is alot less damaging to his health.. stop trying to be a brainbox...

oh yeh... i smoke alot of weed too.. and theres nothin wrong with smokin 7grams a day.. its better than a crate of beers a day...

plus, i started smoking weed when i was like 11-12.. and im perfectly fine.. smoking at a younger age isnt half as bad as you seem to think it is... and like lip, i would much rather my child smoked weed than drunk alchohol...

you say you would not let your child smoke weed until they are 18... haha thats funny.. whether you let them or not, they are gonna drink, or smoke before they are 18... and theres fuck all anyone can do about it.. which is why i will tell my child not to drink, and to smoke weed instead...

if i was as worried about the effects cannabis has on my health as bad as you are.. i would quit... i mean.. you sound like FRANK...