none of 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
Inf. none of someone's business. (Jocular.) It's none of your beeswax. I'm not telling. You'll never know. The answer is none of your beeswax.