Briliantly yucky. Compare slime of every sort. Which one gets the slime-o-meter climbing? Pond gunge. Dog slobber. Phlegm. Boogers. Snail trails. Here are thirty types of slimy goop, shown in horrid facts and close-up photos. (You can almost smell the reeking fumes.) Check out the weird science behind each slimeball. Then rate its ‘bleeugh’ factor on the slime-o-meter. Yuck out.