If you haven’t seen Marvel’s Guardians of the Galaxy Vol. 2, then you've missed what might be the best and biggest running joke of the year. The now infamous “I’m Mary Poppins, y’all!” proclaimed by Yondu (played by Michael Rooker) has captured the imagination of fans, and the joke is bleeding into the real world more and more with each passing day.

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Ever since uttering the phrase, Rooker has made a point to grace his Instagram with various Mary Poppins references, even managing to find his own custom Funko Pop! figure. Now, however, he’s outdone himself by finding Mary Poppins herself, and posing with her for a photo. In the snap (below), Rooker proclaims “She’s Mary Poppins y’all” before quickly taking it back with a “immarypoppinsyall” hashtag.

For those that may have not seen Guardians Vol. 2, there is a point in which Yondu uses his arrow to float down to the ground safely. Upon seeing this, Peter Quill (Chris Pratt) quickly declares that he looks like Mary Poppins. Yondu doesn’t know about Poppins of course, but asks if “he’s” cool. In a surprisingly touching moment, Pratt says that Poppins is definitely cool, leading Yondu to scream out the fan-favorite line. It’s one of those lines that has quickly seeped into the ether, and will most likely go down as one of the films most fondly remembered quotes.

Written and directed by James Gunn, Guardians of the Galaxy Vol. 2 stars Chris Pratt, Zoe Saldana, Bradley Cooper, Dave Bautista, Vin Diesel, Karen Gillan, Pom Klementieff, Kurt Russell, and Michael Rooker as Yondu. Guardians of the Galaxy Vol. 2 is now playing in theaters.