Apparently I'm the go to guy when people want grow lights at work...

So I was at work (I work outside in a lumber yard/hardware store, but I just lift stuff and load stuff mostly. I'm not one of the sales staff inside), it was a little snowy and chilly outside so my co-worker(smokes weed) and I(also smokes lots of weed) were chatting inside the store staying warm. All of a sudden one of the sales staff comes over to us with a customer and asks where the customer could purchase some lights, about a foot long. I was puzzled at first, and then he says "Like a grow light". The salesman chuckles for a moment, and the customer notices my quizzical look and says while laughing "Looks like these guys are growing some pot!". We then direct him to the grow stores in town. The salesman keeps laughing as the customer leaves and says he figured we'd know where to get grow lights. I was completely shocked when he came over to us. That was the last question I was expecting at work. Good to see our knowledge is appreciated though, even if I was too shocked to provide a good answer.