Can you push the neck of a ballon into its self, thus plugging the balloon and preventing any air to come out?

What is(if there is any) the method to do this? I've always wondered this and want an answer. (i don't even know if it WOULD plug the balloon when it was pushed inside.)

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Prfesser8 years ago
It can be done with some balloons, not all. The neck needs to be pretty long. Roll it up from the end, tightly, "zig zagging" it in such a way that the lump of rubber you've created is wider than the neck. Don't roll it *quite* up to the balloon. Then just work it inside the balloon. Since the rolled-up neck is wider than the hole it went into, it won't come out. Or at least not too easily.
I am Silas.8 years ago
It did not work for me, but you can with some balloons.
karnuvap8 years ago
Do you mean something like this?

http://www.kleinbottle.com/

I don't think you can do it with a baloon but I could be wrong.
I lol'd when I saw the hat on that page...My older sister knitted a klein bottle for an art-class project when we were younger...product of having a dad who teaches math and the fascination with M.C. Escher during the 1970s I guess.
kelseymh8 years ago
It wouldn't plug the balloon.