A Contradiction to My Choice

Ever since I started this Life, my mom would always ask me if I'm still using or when was my last time.  Now, how does one, in my position answer this question?  If it were just up to me, I would really want to tell the truth Everyone expects to be told the truth, but "Can They Handle the Truth?"  How does 1 distinguish an addict? Addicts certainly don't ask other people IF they USE or are still using. It's simply just not done.