Thanks to Dan Petro, the inventor of the Rickmote, it is possible to use Google's Chromecast to rickroll prank the people near you with a small device. The small orange box can be used to hijack Chromecast and play Rick Astley's classic 'Never Gonna Give You Up.' The security analyst's invention can discover nearby Chromecasts and use the network it's on to send any video the prankster wants to the screen. So one could choose to full on rickroll prank someone by choosing to play Rick Astley, but you could also choose any song, video or Chromecast content.
The catch is once the person on the receiving end of the prank cannot easily get their screen back under their control when they are no longer enjoying the rickrolling.