ur palm is the shit dude but i would just tell my parents 2 use a suab test u know the 1 that goes in ur mouth cuz that only detects up 2 3 days n is less expensive, i got caught along time back n my mom flipped i was grounded 4 2 months but after that i just tell her when i am tokin n i have 2 do it at home n she also allows me 2 smoke cigs (newports the best) n i had an awful experience with alcohol so i am never drinking again also becuase my father is an alcoholic so weed n cigs i'll always stick with