Butt out!, initially, 4 letters
Don't be so snoopy! (abbr.), 4 letters
Don't interfere, briefly, 4 letters
Don't interfere!, for short, 4 letters
Leave me alone, initially, 4 letters
Abbr. that means Butt out!, 4 letters
Abby's initial advice, 4 letters
Advice-column abbr., 4 letters
Advice-column acronym, 4 letters