{n. phr.} Two things the same; not a real choice; no difference. * /Which coat do you like better, the brown or the blue? It's six of one and half-a-dozen of the other./ * /Johnny says it's six of one and half-a-dozen of the other whether he does the job tonight or tomorrow night./
SIX OF ONE AND HALF-A-DOZEN OF THE OTHER
Meaning of SIX OF ONE AND HALF-A-DOZEN OF THE OTHER in English
Dictionary of English idioms . Словарь английских идиом. 2012