How do you express your angry at the person when he intermeddles your business, but it obviously has nothing to do with him?
(I mean besides None of your business)
A small aside - intermeddle is a good, sound old-fashioned word. It includes such a strong sense of interfering in something that doesn't concern him that I don't think you need to add the ", but it obviously ...." part of the sentence.
It is, however, a very unusual word.
Intermeddle came to English originally meaning to mix together, intermingle, intermix; then to mix onself up with something; and finally to interfere in someone else's business.
I thought at first it was a conflation of interfere and meddle, but it has its very own pedigree