"What you talkin bout Willis" is a phrase from the 1970s American sitcom "Diffrent Strokes" that has become a popular catchphrase and meme. It is often used to express disbelief or confusion in response to something someone has said. There are several GIFs available on GIPHY and GIFDB that feature the phrase, including "What-you-talkin-bout-willis," "Whatchu-talkin-bout-willis," and "What-you-talking-about-willis".