Question

on the gravy train Since the little town has become fashionable, she charges for every photograph taken of their mansion – she’s on the gravy train.

Accepted Answer

If someone is on the gravy train, they have found an easy way to make money, one that requires little effort and is without risk.

Phrase/Idiom	on the gravy train
Definition	If someone is on the gravy train, they have found an easy way to make money, one that requires little effort and is without risk.
Example	Since the little town has become fashionable, she charges for every photograph taken of their mansion – she’s on the gravy train.

Gravy Train Found Easy Make Money Requires Effort