Multiple Cokes for the price of 1 at vending machines

Now I'm in no way condoning this, but you have got to admit this is a pretty neat no-tech scam of a newer Coke machine. This is for demonstrative and educational purposes only.

It pretty much goes like this:

1. Insert change and choose drink
2. When drink enters chute, have hand up drop door ready to stop soda from falling through
3. Hold soda in place until drink chute drops again
4. Your money is then returned into the change slot.
5. Repeat steps 1-4

And here's a video of it in action:



Remember, this is for demonstrative and educational purposes only. What you do with this knowledge from here is on your own accord.