Does your MacBooks fan make noise when you list your computer?

When my fan is on and I lift my macbook or tilt it to the side very quick at all I can hear the fan blades hitting. Im sure its not too bad of a problem... Im just wondering if I chould be concerned.

Nah, dont worry mine does the same too.
It's only cause the fan needs a small gap on the axle to spin freely. All your doing is adjusting the gyro effect of a rotating item when changing the plane angle.

Sorry I studied gyro's for a science project when in school many years ago.

that or it could be a disk in ur cd drive too