Do you have long hair A-D? Do you drive a motorcyle? :)
The same thing happened to me, one morning. We have a supermarket here in Arizona called "Bashas" and I went early one morning for syringes since I had used my very last one the night before for dinner and then re-used it later for Lantus. I went without showering (it was my freshman year of college, and I think I only had one class that morning and I was already late) and I had quite long hair at the time. Needless to say I've quite frequently been mistaken for being part of a "rough crowd", and at some points of my life have even been a part of this type of crowd... but, I've never been judged like I was about to be by someone who didn't know me at all.
I asked if the pharmacy was open... "No, not until 9 AM".
I asked if they had any syringes to sell that were not OTC from the pharmacy... She raised her eyebrow.
I said that some supermarkets (at least used to) sell syringes by the diabetic products - ensure, diabetic vitamin supplements, glucose tablets, etc.
She gave me a once-over and then a twice-over, and said something along the lines of "I'm sorry son, we don't carry anything like that. No, we don't carry anything like that at all." She then turned her back and left, leaving her very snarky tone that seemed to suggest, "please, kid... get some help" lingering with me, just standing there.
--------------------------------
I've also had the pharmacist have me show her my glucometer to have me prove to her that I actually was a diabetic.
--------------------------------
Also, one time hanging out with one of my friends from my previous "rough crowd", he asked me what type of syringes I used after I gave myself a shot. I told him that I used BD utra-fine syringes. He then said in a surprised voice, "those are the ones I used to use, too." He had a history of heroin abuse. :-(
--------------------------------
Finally (I really shouldn't have so many stories relating to this), one of my co-workers who used to be a probation officer working with delinquent children and teenagers told me a story. There was a young kid in his teenage years who was type 1 diabetic who had developed an addiction to heroin and subsequently got involved in crime. He had been on and off the drug for a few years but the kid claimed, "I think I could get off of heroin if I wasn't diabetic. Injecting myself with insulin always reminds me of injecting other drugs, and it encourages me to go look for my next fix no matter what I'm injecting."
OK, that's all.