The line comes from Marvel's Guardians of the Galaxy Vol. 2, released in 2017, where Yondu, played by Michael Rooker, floats down holding his arrow while Peter Quill points out the resemblance. Yondu asks if he looks like Mary Poppins, hears that he does, and proudly accepts it. The exchange became a widely shared quote and reaction clip, often detached from the film and reused whenever someone descends, arrives in style, or embraces an unlikely flattering comparison online.