Lead (one) (around) by the nose informal
If a person "leads one around by the nose", he/she has total control over someone and makes them do exactly what he/she wants.
Be careful! Don't let him lead you around by the nose like that.
He wasn't aware that he had been led around by the nose for months.
If a person "leads one around by the nose", he/she guides someone in a careful and slow way as if they are quite not smart.
I promise I will lead our new member around by the nose and make sure he doesn't get into trouble.
The verb "lead" should be conjugated according to its tense.
Although this phrase, which alludes to an animal led by a ring passed through its nostrils, occurs in a slightly different form in the Bible (Isaiah 37:29), its first use in English appears in a translation of Lucian’s Dialogues of the Gods (ca. a.d. 170), cited by Erasmus in Adagia. By the sixteenth century, it had been transferred to human beings.
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!