Heya don´t want to alarm you but what are you feeding your cham? I didn´t know any better and when my first cham discovered superworms he stopped taking all other foods (crickets, grasshoppers etc) and would feed solely on superworms. After switching to the superworm diest, eventually I also started noticing that he would have something coming out of his butt when he was done pooping. I also thought it was a sperm plug, but after weeks of the same he started looking not so good and i took him to the vet. The vet told me that what was happening to my cham was that he was having an intestinal prolapse on account of eating the poor quality superworms. He was put on medication, we had to force feed him with a specialy formulated mix. After months of suffering, and trying our best to do all we could for the little guy he passed away. Apparantly once a cham has a prolapse its very hard to get them healthy again. Anyway, I don´t want to alarm you, but i do think its something to be aware of. I certainly wont ever feed superworms to a chameleon ever again.