The term 'Auction Off, Say' can be summarized as the act of selling something through an auction. An auction is a process of buying and selling goods or services by offering them up for bid, taking bids, and then selling the item to the highest bidder. This type of sale is often used when selling items of high value, such as real estate or antiques. It is also commonly used in charity events, where people bid on items to raise money for a cause.