There was a Tales from the Crypt episode about this. It's been a long time, but they played a prank on a guy where they somehow knocked him out and temporarily

There was a Tales from the Crypt episode about this. It's been a long time, but they played a prank on a guy where they somehow knocked him out and temporarily paralyzed him. When he came around they pretended like they were about to do an autopsy on him, knowing that he could hear them. Then I think one of the pranksters had a heart attack and died and they really did an autopsy on him, except it turned out that consciousness did continue after death and the scene ended as he started screaming (in his mind - somehow they got across to the audience that you were hearing his thoughts) as the started cutting in.