Junior Magic Circle

"Good afternoon, everybody, and welcome to the Junior Magic Circle open day. Most of you probably noticed young Megan on the way in, she has been trying to produce a Great Dane out of a thimble. Yeah, good luck with that! Kids eh? The star of today's event is Darren, who as you will soon see is chained and handcuffed underwater in a glass casket on the stage behind me."
The stage curtains open.
Gasps ricochet around the audience.
"Darren's been underwater for fifteen minutes now, he's no Houdini so the smart money is on this being his last performance."