No Glasses 3D! The Amazing World of Gumball: Cartoon Network
The video starts with a girl named Carrie asking the viewer to come closer to the screen until they are three inches away from it. The viewer is then instructed to focus on Carrie's eyes until the 3D effect kicks in. However, after the 3D effect kicks in, a ghost (which is actually Carrie herself) suddenly pops up on the screen accompanied by a loud scream. After scaring the viewer, Carrie laughs and says "You just got trolled" while playing air guitar loudly until the wall from the video collapses. The same screamer also appears in The Tape episode, but Carrie's quote at the end is cut.
NOTE: The following video contains a screamer!