But why, exactly, does this happen? And is it ever a sign of a problem? Urologist Ryan Berglund, MD, answers your questions on the topic:. Q: Why exactly do morning erections occur? A: The sacral Men Like to Watch Them Dance. Why do guys like boobs? Because its motions! As much as men enjoy seeing and touching breasts, they enjoy watching them dance even more. As you move, walk or dance, breasts get into motions that are very appealing to men. A woman jumping on trampolines will make a man stop in his track, just to see the twins wiggle!