Somewhere along the road, people started calling them by the maker instead of the product. It has been going on for years without anyone giving it a second thought.
I typically purchase Kleenex brand tissues, but not always. So when someone asks me if I have a Kleenex, I really have to think and remember which box I pulled the tissues from to accurately answer their question. For some reason my friends and family stopped asking if I had any.
Depending on how my nose is feeling that day, I might want to use another brand. Next time I'm caught out of my house without tissues, I'm going to ask someone if they have a 'Great Value' (that's Walmart's brand). Somehow I don't think I'm going to like the responses.
Have a happy flu and cold season and don't forget your Kleenex!