Okay, who put the lead on the Christmas tree lights?

It almost sounds like a joke, doesn't it? Well it's not.

As if all the toys with lead aren't enough to ruin your holiday season, now we've got lead on the Christmas tree lights.

It's apparently widely known in the Christmas tree light industry that there is lead in the product. The lead helps make the product more durable and is a fire retardant.

But now researchers have found lead on the Christmas tree lights, and that's got people concerned. CNN had four common brands of Christmas lights examined by an independent lab, which found that lead on the coating of the cords in 3 of the 4 brands far exceeded a recommended children's limit of 15 micrograms.