Columboposting refers to a genre of internet memes centered around Lieutenant Columbo, the titular character from the classic crime drama series portrayed by Peter Falk. The meme typically emphasizes Columbo's disarming demeanor, his penchant for rambling about his wife, and his legendary 'just one more thing' catchphrase, which usually signals the moment he traps a suspect in a logical contradiction. Gaining significant traction on platforms like Twitter and Tumblr in the late 2010s and early 2020s, Columboposting often blends the detective's signature logic with modern pop culture, video game scenarios, or surrealist humor. It serves as a versatile format for pointing out contradictions or delivering a 'gotcha' moment with a polite, rumpled charm.