know (redirected from don't know the first thing about)

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be in the know before someone knows what hit them before you know it better the devil you know (than the devil you don't) can't tell your arse from your elbow for all someone knows if someone knows what's good for them in the know know a thing or two know something backwards know something backwards and forwards not know beans about something know best know better (than to do something) know someone/something by sight know different not know someone from Adam not know if/whether you are coming or going know something inside out know something like the back of your hand

know no bounds know of someone/something know your onions know your place (do you) know something know your stuff know the drill not know the first thing about something not know the half of it not know the meaning of the word know the ropes know the score know someone through and through know your way around (somewhere) know your way around something not know what hit you know what you are doing know what you are talking about know what's what not know where to put yourself

know where you stand not know whether to laugh or cry know which side your bread is buttered (on) not know which way to turn a know-all know/learn something (off) by heart the left hand doesn't know what the right hand is doing not know beans about something not know if you are coming or going not know the first thing about something not know what hit you not know where to turn not know whether to laugh or cry not know which way to turn (Well) what do you know! what do you know What you don't know won't hurt you. wouldn't know something if it hit you in the face you know