You should live your own life, but respect your parents. If your parents are worried that your smokin pot, show them that it doesnt affect you. If your still in school than just work hard at gettin good grades and shit. Let them know that your not gonna turn into some stoner burn out. Thats a parents worst fear and when they catch you smokin pot, thats what they think is gonna happen.

You might just wanna never be around your parents high. Only smoke when you know you wont have to speak to them. Like my mom doesnt really care if i smoke with my friends but if i come home stoned off my ass and talk to her, she gets all disapointed.