LOUISE: You’d think the brain trust behind P.E. could come up with some sport that didn’t give you helmet hair all afternoon.
A brain trust is a group of experts appointed to advise a government, leader, or organisation. The concept comes from President F.D.R. Roosevelt. In the UK, the term brains trust is more common. It is often used sarcastically, to imply the people in charge aren’t very intelligent at all.
Louise makes it sound as if they have no choice about doing fencing for Physical Education, yet in Season 1, Rory said that there were numerous sports to choose from at Chilton. She signed up for golf, but is doing fencing now. A lot of fans find that confusing, yet it doesn’t seem that strange that a different sport might be chosen for each year, or each semester.
The Annotated Gilmore Girls 