it's none of your beeswax

Just like "it's none of your business", "It's none of your beeswax" is another way to say that you don't want someone to know about your private life.

A: Dude,Where have you been lately?
B: It's none of your beeswax.

None of your beeswax

Its a way of saying "None of your business"

Hey dude what's that "None of your beeswax"