I told my mom about smoking weed i think 2 days ago, and shes more worried than mad, actually shes not mad at all. If u wanna tell ur parents, make it 100% clear that u dont have a drug problem or need to go into a program or some shit like that. W/e u do, dont let them find out on their own, cuz if they r like anti-drug people they will probably put u in therapy or go to a family councelor.