The video begins with Spiderman zooming his camera in and out dramatically to a Google image of Vision as he fought with Ultron. No one knows where the image came from seeing as how (supposedly) there were't any civilians around at the time, but either way, someone leaked it, and everyone saw it. (Vision totally leaked it, but will never admit it to anyone.) Spiderman is again yelling at the image, a la Hawkeye, as he jabs at the photo, "This man! This man right here deadass made a mcfrigging born-yesterday joke to the psycho murdering AI bent on world domination who was trying to kill him at the time!" The screen then turned around to show Spiderman's mask as he continued. "But do you want to know the worst part, world? Do you?! He really was! When he made the joke, he really had been born the day before. Fu-fuh-fuckkin minttt…" By the end of the video he has devolved into laughing and crying, mainly crying, as he finished his story.
It probably didn't help that the comments section for days was littered with only one word. "Mood."