This study did indeed find a correlation between breast size and ticklishness; however, this study was not just simply a comparison of ticklishness and breast size. This same study found that guys who have square jaws are more ticklish. But really this study seemed to indicate that dominant men and submissive women are the most ticklish. By the way according to the study, the people who like to be tickled are the most ticklish. And I as I pointed out above, the study, of and by itself, should not be viewed as definitive. A lot of times studies seem to indicate something, but their results are unable to be replicated, which in turn means the study was flawed in some way. Of course, the media has a bad habit of running the headline that a study says "X" and acting like it is gospel.