Okay. Have a doc tell one of them that they don't have much time left...not really a prank, though. Hmm, even better. They'll be told that murder she wrote's coming back for a whole new season, only instead of the new season that you've got the olds anxiously anticipating, it's just a bunch of reruns from the eighties. The problem is that only the audience will be in on the prank even after it's over. So far, nothing. Apparently betty white's the only surviving cast member of golden girls. She could be waiting in a doctor's office with some other olds, and tell them that she killed all of the other cast members for their medication because of "obamacare", and then ask the others what kinds of pills that they take. How about trying to get old people to say racist and/or homophobic things followed by awkward pauses and harsh ridicule? Okay, betty white pretends she's having a stroke in, say, a restaurant...or even better, betty white is "passed out" on the floor showing no visible signs of life when her wizened friends come to visit...like one of those, "what would you do" thingies taken too far (ha ha!). And when they panic and check her pulse, she could say,"Boo!" or, "chicken pot pie!"

But I think I've got a prank that beats all of that amateur hour bullshit. Visit one of those lower end nursing homes. You know, the kind where old people are sent off to die alone staring vacantly at a wall and guarding the few possessions that they have left from drug addicted staff who will steal and pawn it for crack money, waiting for the merciful kiss of death to whisk them away them from their urine soaked hell. They likely haven't been visited by family or friends in a very long time...Betty White could tell them that their children, grandchildren or friends are coming to visit on the weekend. On the day of the big event, nobody shows up--not even betty white. Comedy gold.