pickknow what's what know what's what See: KNOW SOMETHING INSIDE OUT. No categories: add yours Source: A Dictionary of American Idioms 'know what's what' on video 【Ankoya ft. Hatsune Miku】I don't know what's what «English sub» [Re-upload] English Tutor Nick P Idioms (280) Know What's What I don’t know what’s what - あんこや。feat. Hatsune Miku (初音ミク) Good Tabs vs Bad Tabs / know what's what / Unveiling the cryptic nature of Paco de Lucia´s music sort: relevance, mode: exact match, q: "know what's what", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Leave my opinion