poke your nose into

poke (one's) nose in(to) (something)

To involve or insert oneself in an intrusive or nosy manner into something that is not one's business or responsibility. I wish our neighbors would quit poking their noses in and just leave us alone! Don't poke your nose into your brother's affairs—he can manage well enough on his own.
See also: nose, poke

poke your nose into

take an intrusive interest in; pry into. informal
See also: nose, poke

poke/stick your nose in/into something

(informal) interfere in the affairs or business of other people: She’s always sticking her nose into other people’s affairs. It’s really annoying.What happens in this department does not concern him. Why does he have to poke his nose into everything all the time?
See also: nose, poke, something, stick
References in classic literature ?
You are afraid to poke your nose into any room in the house now; so, after walking up and down the stairs for a while, you go and sit in your own bedroom.
If you really want to poke your nose into the country, take the Lakes, Mountains & Ming Townships tour, only possible because of a new airport, road and hotel in Jiuzhaigou.
IT'S not always appropriate or polite to poke your nose into someone else's argument, but I have to comment on the row caused by Elaine C Smith's comments about Marvin Andrews, the Rangers player, and God's football allegiance.