The theme of this puzzle is oxymorons, FOOD, and SEATING. Oxymorons are figures of speech that combine two seemingly contradictory terms, such as 'wise fool' or 'jumbo shrimp'. FOOD is a broad term for any substance consumed to provide nutritional support for an organism. SEATING is the act of sitting down or providing a place to sit. Together, these three words form a theme that could be interpreted in many ways, such as a restaurant with unusual menu items, or a SEATING arrangement that is both comfortable and uncomfortable.