if my parents were drug testing me I'd just continue to smoke and disobey my parents even more than I already would. not go off and huff computer duster...
This is what happened to me, I went from smoking weed to taking benzos, vicodin, mushrooms, DXM and MDMA. It also potentated the profound hate I already had towards my parents. On a shroom trip during the period I was being drug tested by my parents I begged one of my best friends to kill my parents for me.