 Find a forest near you and start exploring at discovertheforest.org. Brought to you by the United States Forest Service and the Ad Council. OptUS Kids presents What to Expect When You're Expecting. A teenager learning the lingo. GOAT. G-O-A-T. Acronym stands for greatest of all time. As in spaghetti sandwiches for dinner? They're my fave. Dad, you're the GOAT.