Here, class, we can clearly see the effects of Newtons three laws of motion by the female body. They are as follows:
1. A titty at rest will remain at rest unless hit by an outside boobie.
2. The wobble of a breast is directly proportional to the size and motion of the chesticle propelling it from the outside.
3. For every Jiggle there is an equal but opposite re-Jiggle.
These laws form the basis for every typical male's erection and stuff...