Sound advice without question! But I felt the need to tell the person I'm living with just so they're aware (also because it's family). 

I had a very, very close call back in high school when I was into a fair bit of Mary Jane and under suspicious I got escorted to the office, had my bag/pencil case searched but luckily I was told ahead of time so ditched everything in advance, to my surprise I forgot about the scales I always kept in my pencil case :shock: they dumped everything out onto the table and my heart began beating faster than it ever had before, there we stood looking at everything they had tipped on the desk and for what seemed like eternity, then they looked up "well put everything back into your bag and get back to class" with my heart seemingly sitting in my throat I complied shoving everything back into my bag starting with the scales I was instantly washed with relief "How foolish, they thought it was a calculator" I thought to myself as I walked out.

Hope all enjoyed that little tale from my naive/moronic days (4 years ago), I have plenty more but I will keep them for a more opportune time.