Watch pockets are small pockets that were sewn into the waistbands of men's trousers in the 19th century. They were designed to hold pocket watches, which were a popular accessory at the time. The term 'FOBS' is an acronym for 'Fob and Suspender Buttons, ' which were often attached to the watch pocket. Fobs were decorative items that were used to secure the pocket watch chain to the pocket. Suspender buttons were used to attach the trousers to the suspenders.