Usually to qualify for a mortgage, borrowers need income,a job or assets.
A ninja mortgage is a type of mortgage granted to people with none of the above, hence:
Without income, a job or assets, it's hard to pay back a mortgage. Many ninja loans became subprime when peeps couldn't refinance their loans.
These peeps are now ninjah
Borrower: Gee, I'd like to buy a house, but I have no job or income... can you help me ?
Mortgage broker: With a ninja mortgage you don't need to prove you have income or a job, we don't even need a downpayment since the value of your house will always go up!