Stick (one's) nose in(to) (something) verb phrase
To involve oneself into something that is none of one's business or responsiblity
He's a hot-tempered person. You'd better not stick your nose into their business.
I find that my neighbors are interested in sticking their noses into our family's affairs.
Don't stick your nose into our affairs.
To interfere somebosy's plan or bussiness
Not working properly
To disrupt someone's plan.
To interrupt something (usually a conversation or discussion).
To take someone's attention away from, or interfere with what they are doing, so that they are unable to do it well
The verb "stick" should be conjugated according to its tense.
Said when you are frightened to do something again because you had an unpleasant experience doing it the first time
After being cheated by her husband, Jane loses her belief on marriage and doesn't want to start any new relationship - a scalded dog fears cold water.