 Make the forest part of your story today at a local park near you. Or find one at discovertheforest.org. Brought to you by the United States Forest Service and the Ad Council. Doc US Kids presents What to Expect When You're Expecting. A teenager learning the lingo. Jelly. Jelly adjective. Jelly is a shorter, better way to say jealous. As in, Chloe, I am like so jelly of your unicorn phone case.