"Hey everyone" catchy phrase thanks to the new trailer of what will be Marvel's next masterpiece. What if you where told that the last 10 seconds of the trailer where ment in certain way to break the fouth wall?
This obviously starts by Tony Stark's hand, at the point that we all thought the trailer had come to an end until we saw the time left in the video bar, then we hear Tony saying; "Alright, i'm running out of patience." This may be hidden but could represent marvel's answer to all of fans that already wanted to see what's up with spidey, this could also mean a response to all angry fans that where not pleased with the begining confirmation of spiderman not being in the film.
"Underoos!" at this part, we are not able to know what happens next, who is Tony calling? It could be anybody, Vision, Panther, etc... But at the time we know that we are being introduced to Marvel's most iconic hero for the first time at his corresponding side, we are screaming of joy. Finally ending up in...
"Hey everyone." At the time we see Spiderman on screen we hear him saying this phrase, what you probably dont know, is that he is not only talking to every cast members in the sequence, but actually to everyone outside the screen, spidey was actually introducing him self as a a new part of Marvel cinematic universe. Also didn't you noticed? this is the classic comic book Spiderman suit! (with some little changes) Introduced in that pose, holding cap's shield...means he is ready to take over.