By name

So I know it's bad enough that the cashiers and cosmetics ladies at Walgreens know me by name. But today the pharmacy girl knew me by (last) name!! I hadn't even stepped up to the counter yet and she called my name. Its been a couple weeks since i was in last, so its not like i was just in yesterday. Granted it seems I'm always picking something up, vitamins, clomid, metformin, provera, etc, etc. But to know I'm a "regular" of the Walgreens pharmacy is still kinda surprising. I wonder if they put 2 and 2 together. If they actually pay attention to what it is I'm getting, do they know whats going on? Sorry, I just find it amusing =)