none of someone’s beeswax
none of (one's) beeswax
Something that is of no concern to another. This phrase is a less formal or serious version of "none of (one's) business." It's none of your beeswax why I left the party early the other night.
none of someone’s beeswax(...ˈbizwæks)
n. none of someone’s business. It’s none of your beeswax. I’m not telling.