Undo Hundo Posted in U Best definition Undo Hundo A 100 dollar bill that has been stored in someones undergarment, such as a bra or underwear. Would you believe Sarah had the nerve to pay me back with an undo hundo? How satisfied are you with the definition? Looking for Undo Hundo meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 45 times.