well...ok. None the less, it's no where near as bad as the stuff on television for them to mimmick. I used them in my show for years as have Ken Scott, David Allen, David Ginn, David Kaye, Dan Garrett, and many other Kidshow legends, and NEVER had a problem.
A plastic bag doesn't even look like a mouth coil...so that was dumbness on YOUR part.
Hey, I was a kid with a vivid imagination (as most 6-7 year olds do), and I figured "If this guy can fit something that big it his mouth and pull it out from his throat, then so can I." You have to remember, kids don't think that the paper is rolled up all nicely inside a little paper tube ready to pull out. They think that it's possible to stuff paper down your throat and pull it back out again!