Like it Brum.....
Here's a good one for any of you that have kids that have a goldfish......
Safely remove the goldfish to a temporary safe home.Slice a piece of carrot approximately the same size as the fish and put it in your hand above the tank.
Shout on the kids-quickly flash the piece of carrot in your hand and quickly put it in your mouth crunching loudly! Watch as their faces turn to horror!
PLEASE REMEMBER TO TELL THEM THE PRANK THOUGH!
I can expect the DSS at my door tomorrow eh?