These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Memetic Mutation: "Hawkward", after being hug-snubbed at some Avengers functions.
"Let's Stretch Bitches!": Renner mentioned during the Jimmy Kimmel interviews that a bunch of hikers were yelling this on his lawn one morning. Fans pretty much appropriated it as an unofficial motto. Probably helps that Renner has a habit of stretching during his filming.
"Resting Face": An Avengers interview pointed out his tendenacy to look rather angry and stern in some photoshoots. He clarified that it was just his "resting face"
Retroactive Recognition: His career has taken off hugely in the last five years, so this is often the reaction to previous work.