Training To Be A Dentist 

Actually, doing it slowly is more likely to pop it. They’re stabbing it into the thick part of the balloon so that it’s less likely to pop.

There inserting the needle in the thick part of the ballon so that it less likely to pop

The balloon pops because putting the needle in breaks the surface of the balloon, creating a weak spot that then rips in a cascading failure. There are two ways that anyone can get around this: * First is to put a piece of tape on the balloon, and then put the needle through the middle of the tape. * Second is to target one of the ends of the balloon where there is more material and less tension. In both cases, the point is to have enough strength at the point of the puncture to prevent a catastrophic cascading tear from forming.

I always thought the trick was to put a piece of Scotch tape on the spot you're planning to prick.

No, the trick do getting everytime is to insert it at the top or bottom of the balloon, where the plastic is thickest. And not being stretched.

You have no idea what you are talking about are you?