As a common adjective, 弯弯 describes anything gracefully curved - a winding river, the crescent moon (弯弯的月亮), arched eyebrows. The pop-culture reading capitalizes the W: 弯弯.
Pen-name of Taiwanese illustrator Hu Chia-wei (胡家玮 Hú Jiāwěi, b. 1981), whose stick-figure web comics about everyday life became a phenomenon across Greater China in the 2000s. Books like 《可不可以不要上班》sold millions.