A spank bank made of mental images of attractive women that you see at your bank, used later for masturbatory purposes.
Person 1: Yo dude! Do you see that hottie makin' a deposit at that window? She's going in my Bank Spank Bank!
Person 2: Hellz Yeaaa nigga!!
Person 2: Hellz Yeaaa nigga!!
by Scrotum Scrunchie March 15, 2011