Tennis Buttock

• cheeks, a shape-metaphor within human anatomy, but also used in the singular: left cheek and right cheek; sounds particularly naughty because of the homonym and the adjective cheeky, lending themselves to word puns
• culo - (From Spanish/Italian) slang, usually meaning a woman's voluptuous, round and firm buttocks. Put simply the Latino equivalent of booty, although in Spanish it is considered vulgar and offensive (but less so in Spain than in Latin America).
• duffs - Scotch Irish origin
• dumper sometimes denotes the buttocks, especially when talking about a large butt.