This Weird Straw Effect | EVERYDAY MYSTERIES

Crazy revolutionary clip
For that you need:
-A clip without plastic
-Two neodinium magnets (with the same shape and strong)
-A very thin thread and not elastic (better if it's long)
Procedure:
Put the thread around the clip (the part with one edge) and then rotate a lot the clip (around 150-200 times) put the clip close to the magnet 1 (and starts spining) pull it back and put it close to the magnet 2 (and starts spinning faster) do it whatever times you want and it will go so fast, it creats a sound.
I don't know why that's happends
(Sorry for my english)