Lead somebody by the nose
Definition 1 of 1
Pro Tip 1/3Power Dynamics
Used to describe situations where one person has significant control over another. 
In that company, the boss leads the new interns by the nose.
Pro Tip 2/3Negative Connotation
Carries a negative feeling, suggesting manipulation or unfair influence. 
Politicians shouldn't lead voters by the nose with false promises.
Pro Tip 3/3Figurative Use
Not to be taken literally; no one is physically pulling another's nose. 
He's so gullible that anyone could lead him by the nose.