Has anyone done this? *Freaky & Weird*

[DoesWhatNintenDont]

Meh, nothing more than a poor adaptation of a "magic" trick.

Ever attempt to lift something, yet not realize how heavy it is? Only to exert yourself further the second time around, more or less over compensating?

If you want a more in depth answer ask the Amazing Randi. He loves to debunk anything that isn't "science." Watch out though, he himself is a con if you know enough about him. (Specifically, regarding his million dollar test. )