I agree
the closer you are to boobies, the stronger the attraction to move your eyes (spheres) toward them, but also since your head is a larger sphere it is drawn even more strongly toward them.

Since boobies are spaced equidistantly on a woman chest your head naturally is drawn equally toward both and so chooses to nestle just in between them so it receives equal force on each side. If you disturb this force by trying to move your head then the reciprical feedback effect causes your head to waggle back and forth rapidly, which more often than not causes you lips to stick out and make a waggling sort of noise.

Which is the scientific explanation for motorboating.
(Bazongaloid, Fri 23 Jan 2009, 12:43, Reply)