8 XXX : randomsexygifs

That's the antisymmetric mode of oscillation. If she shakes at a bit higher frequency, should see the symmetric mode. Damping is neglected. Film could be useful in first year mech engineering.
/r/Kelly_Gale
I never knew that I needed to know that they moved in circles like that, and yet I'm sure that any female who's performed this maneuver is at least subconsciously aware of the fact. My life is different now.

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