Weird gross thing in my Lipton Tea

There was a free hand out of Lipton tea at Central station, so I got one. I drank some of it, and then I saw the Thing inside:

Check it out:

It's all gross and green. I think it's the small thing under the lid, but it's soaked so long something green and slimy has grown on it, and it turned the tea slightly more yellow than it should have been. I drank some of it! >o<