This thread is hilarious! Is there anyone who actually admits to taking "illicit substances" more than once or doing it deliberately instead of "by accident"? Or of taking substantial quantities instead of a tiny amount? Get real!
Does anyone really expect us to believe "Oh, Officer, I feel so stupid. I only did it once and I'll never do it again!"
Is this the sort of attitude that will lead to filing an MOR on yourself when you've done something silly? There's a fundamental incompatability with flying here, isn't there?