Archie McPhee used to make and sell a Biohazard Snackbox. (Believe me, it was a lot funnier before we had homeland security.)
Even in those brighter and happier days, there were people that didn't find the product funny. They were called "safety experts" and they had a discussion group where they complained about the snackbox. It seems a hospital employee bought one and took his lunch to work in it. It almost caused the safety official of the hospital to have a heart attack when he saw it in the fridge. You can read about it here.
Well they reported us to the Department of Transportation and it turns out that you aren't allowed to label any container with the biohazard symbol unless it can actually safely contain bio-hazardous material. We had to destroy thousands of dollars worth of product and cease production immediately.
In retrospect, it makes sense. The symbol really does have a practical purpose.
Then, today I see this:
I love ThinkGeek, my advice to them is to get rid of all they have. I can't imagine that they will be as forgiving now as they were then. In fact, I imagine that there would be liability if someone mistakenly thought it was real.
If you want some, order them fast, I'm betting they won't be around for long.