James Gunn is a gift to geeks everywhere - not only is he responsible for two of the weirdest / most personal films in the Marvel Cinematic Universe (Guardians of the Galaxy 1 & 2), but he's also a rare specimen of uber-famous Hollywood director who is INCREDIBLY transparent and open with his fanbase. He's constantly on Facebook answering questions, posting videos and behind-the-scenes anecdotes, and actually responding to countless messages from random people.
Someone in the MCU who plays things a little closer to the chest is Marvel Studios' President Kevin Feige - he's on a few social platforms, but very rarely divulges anything other than posting trailers and promotional material. So when a "Kevin Feige" appeared on Instagram and began messaging James Gunn, he suspected something was up and decided to troll the obviously-fake account:
Gunn - as he usually does - was also game to dive into the comments and gab with his fans about it...and mention the tidbit that he was sending screengrabs to ACTUAL Kevin Feige the whole time:
And now, apropos of nothing, here's James Gunn doing the motion capture for the Baby Groot dance from the opening of Guardians of the Galaxy Vol. 2: