pickI'm telling you . I'm telling you {informal} It is important to listen to what I am saying. Marian is a smart girl but I'm telling you, she doesn't always do what she promises. Categories: add yours informal Source: A Dictionary of American Idioms 'I'm telling you' on video You’re going to love Sarah Ikumu as much as Simon! | Auditions Week 1 | Britain’s Got Talent 2017 And I Am Telling You I'm Not Going Jennifer Holliday - And I am telling you I'm not going (1982) GLEE - And I Am Telling You I'm Not Going (Full Performance) HD sort: relevance, mode: exact match, q: "I'm telling you", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Post my comment