The dollar store across the river had temp. tattoos and stickers with characters promoting legalization in the kids section about a year ago. It took them two weeks and a couple people complaining before anyone even realized it. I still say the employees know what’s going on when things like this happen.
Similarly, when I was about ten, I bought an awesome dragon necklace from another shop and couldn’t figure out why my mother was kinda pissed about it. Three days and a nosy teacher later I realized he was holding a topless women captive in his claws. I was actually a little embarrassed about it and felt stupid that I didn’t figure it out sooner.