Around here, most of the stop'n'robs are selling packets of caffeine, aspirin and assorted other "herbs." I think they're marketing 'em to kids who don't realize that coffee works pretty much just as well.
For that matter, I saw some generic ibuprofen packaged with the name "Dilotta." I guess they were assuming that their customers were stupid enough to think that they were buying dilaudids over the counter.
Add that into jonesing meth heads, and you can get some weirdness. We had a stop'n'rob cashier shot a few weeks back. The robber took the pill display...