Ashley stuck her hand out the top, and yelled an echoey "Ta da!" Laughter and applauds.
"That's great, Ashley, you're a natural at this." The Magician picked up the tube and removed it. "Ladies and gentlemen, once again, a girl on a table!"
The volunteer raised her hand, and said, once again, "Ta da!" More laughter and applauds.
The Magician stage-whispered, "Keep it up, Ashley, I bet we can milk this for at least fifteen more minutes!" Some chuckles from the audience, and Ashley smiled and raised her hand again.
"Ta da!"
While the audience applauded, the Magician pulled out a packing knife and quickly cut a hole in the 18" diameter tube. He stepped up the ladder, and slid it over the girl's head again. The hole lined up with her face, so she smiled and pushed her face through.
The Magician bowed, "Proof that the girl is still on the table, in the tube!" Ashley raised her hand and Ta da'ed again.
"Very good, Ashley- keep your hand up, if you would?" She nodded. The Magician motioned off stage, and a second tube was rolled in, letting the audience see it was completely empty inside. The Magician hopped down and cut a hole in the new tube. "These are actually concrete forms; cheap and lightweight cardboard, used to mold pillars, and common in construction." He picked up the second tube and climbed the ladder. "They have one additional feature-" He slid the tube inside of the first one, letting it sink down until the holes lined up. Ashley looked out and smiled, waving her hand from out of the top of both. "They nest together very well. This new tube has a 16" inside diameter. And a girl inside its 16" diameter, too. On a table."
"Ta da!" Chuckles and applauds. A third tube rolled out onto the stage. The Magician pulled the first one up and away, leaving the 16" tube, and Ashley, smiling and waving on the table. He rolled the 18" tube off the other side, and quickly cut a hole in the new tube. He paused a moment, then pulled out a pen, and wrote 14 on the side, below the hole. He picked it up, climbed the ladder, and slid it inside the 16" tube.
Ashley peered out from behind both holes. "Ta da!" she waved, her hand visible from the top. The audience applauded.
Another tube was rolled out, as the Magician removed the outer tube and rolled it off stage, leaving Ashley peering out of 14. He cut out another hole, and labeled the new tube 12 before sliding it inside 14. This hole was a bit smaller- Ashley couldn't stick her head through anymore, but her face was still visible, and she smiled broadly, still waving. "Ta da!