pickfall flat . fall flat {v.}, {informal} To be a failure; fail. The party fell flat because of the rain. His joke fell flat because no one understood it. Categories: add yours informal verb Source: A Dictionary of American Idioms 'fall flat' on video BABY SPONGEBOB AND BABY PATRICK GOING UNDERWATER in HUMAN FALL FLAT VIRAMOS MASSINHAS E FICAMOS PRESOS NO LABORATÓRIO no Human Fall Flat خريطه للمحترفين فقط (Human Fall Flat) SABRY Huggy Wuggy Escapes DEADLY MANSION! (Human Fall Flat) sort: relevance, mode: exact match, q: "fall flat", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Post my comment