Ever since the first “Iron Man” movie in 2008, savvy Marvel fans have known to remain seated after the end credits for a teaser of what’s ahead. Now, a supposedly leaked video claims it’s got the post-credits scene from “Avengers: Age of Ultron” – and it features none other than Spider-Man.

That’s right, the video below hints that not only will the wall crawler appear in “Age of Ultron,” but he’s been cast and has a couple of lines. There’s just one problem – this video is totally fake.

Sorry to burst your bubble, Spidey fans, but the supposed leak is nothing more than a trick by a really talented video editor. According to Movie Pilot, there are more than a few reasons not to believe this video (not the least of which is the horrendous CGI). The really damning evidence comes in the first few seconds, when the credits scroll finishes on "Age of Ultron" and the appended scene begins. While it’s a totally realistic-looking touch, “Ultron” director Joss Whedon has confirmed to Entertainment Weekly that there will be no scene to follow the credits scroll. While there will indeed be a mid-credits teaser, nothing could top the famous shawarma scene at the end of the first "Avengers" film, so Whedon didn’t even try.

While no one from Marvel Studios was available for comment, as of this writing no actor has been cast as Spider-Man. It was revealed in February that the hero will join the Marvel Cinematic Universe (MCU) later in Phase 3 before getting his very own standalone movie in 2017. So the speaking role that the character has in this scene would be quite the surprise – if it were real.

Marvel did prove, with the introduction of Thanos at the end of the first “Avengers,” that it’s not afraid to introduce a character before casting him or her, in this case Josh Brolin. However, giving a character lines before casting is dicey. Speaking of Thanos, it's rumored he could be the star of the real "Age of Ultron" post-credits sequence.

The video below shows a window washer doing his job on a New York City high-rise with Avengers Tower in the background. When he wipes the fog away from the last pane of glass, Spider-Man is revealed to tell him that he missed a spot. While it’s certainly a fun bit made by a very gifted prankster, don’t allow yourself or your friends to be fooled. You’ll all just have to wait until “Avengers: Age of Ultron” hits theaters May 1 to find out what the studio has in store for real.