In the long-term, constipation can cause dry, hard poo to collect in the rectum, called faecal impaction. Leakage of liquid stools is also possible, called faecal incontinence. Straining on the toilet and constipation can also lead to piles, another name for haemorrhoids.
An endowed professorship (or endowed chair) is a position permanently paid for with the revenue from an endowment fund specifically set up for that purpose. Typically, the position is designated to be in a certain department.
When you have a special ability, you can say you're endowed with it. You can also be endowed with a quality, like beauty. Endowed is often used to describe something you're born with, though it can also refer to something that's been learned. Endowed traditionally meant provided with money, especially when it came to a woman's dowry, the money she brought into a marriage.