Menorrhagia is an abnormally heavy and prolonged menstrual period. Causes may be due to abnormal blood clotting, disruption of normal hormonal regulation of periods or disorders of the endometrial lining of the womb. Depending upon the cause, it may be associated with abnormally painful periods dysmenorrhoea.
"I hate you Bob!" says Pam.
"Why Pam, you're being unusually bitchy today. Are you on your period? You've got menorrhagia don't you?" Bob asks.