FinDom is a specific kind of fetish in which a sub derives an erotic thrill from relinquishing control of their finances to a Financial Domme, which is where the practice derives its name.
A combination of 2 words: 'Financial' and 'Domination'. Financial domination is a very real fetish involving a submissive being "forced" to give money to the Dominant. Terms like money slave, paypig, moneypig, walletslave, wallet rape are all part of the play involved in this type of Domination and submission.
Some men are very turned on by and seek out Findom Mistresses and are aroused by the act of submitting so completely to a Dominant Female.