The popular theory is that Short Men are more aggressive and loud than there taller "brothers". Apparently this theory has been debunked and actually taller men are the more aggressive.
Now as someone of the taller persuasion I thought the theory was pretty sound. Undoubtedly I do have a temper and I do snap but this tends to be the exception rather than the rule. Can be amusing when it happens! I don't, however, hold grudges. I really can't understand these people who bear umbridge at something said 5 years ago.
Actually I think SMS really means that Short Men are not necessarily aggressive but loud and opinionated which honestly does seem to hold true.