feather (one's) own nest
feather (one's) own nest
To enrich oneself by using one's influence or position, especially by misappropriating money. The CEO was fired following allegations that he was feathering his own nest with donations made to the company's charitable fund. The senator used her political career to feather her own nest.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.