Sounds like the tolerance is too tight and the fan blades are actually hitting the casing . I wonder if someone can replicate this or if it's just your MacBook Pro.
Lol, why are you swinging it up and down like that? Keep it on the desk what it deserves to be kept like. You'll experience no such sounds... However, if you really think that these sounds are bothering you much then go ahead and replace it asap.
The thing contains moving parts - it's not recommended to subject it to this kind of treatment while it's on. If it makes that noise while it's sitting on your desk (and it might, there's another thread about just that happening), have it replaced. Otherwise: stop abusing it.