Cosplayer Cindy Salvus Artistry took a few lines from Guardians of the Galaxy 2 and made it a real thing. The character Yondu is mashed up with Mary Poppins! Here's the dialogue from the movie:
Star-Lord: You look like Mary Poppins.
Yondu: Is he cool?
Star-Lord: Hell yeah, he’s cool.
Yondu: I’m Mary Poppins, y’all!