In 2005 the Northwestern University women's lacrosse team won an NCAA championship and was invited to the White House to receive congratulations from the president. Controversy erupted after the team's visit when the official photograph revealed that several team members were wearing flip-flops. Despite the outcry, the athletes took the criticism in stride, talking about it on TheToday Show and auctioning the offending footwear for charity. Given the reaction and the team's response, what kind of norm did the athletes break by wearing flip-flops to the White House?

Folkways are the customs or conventions of daily life. They are a type of social norm expectations for how we act.
In sociology, folkways are generally discussed in contrast to mores because they are both types of social norms, though they vary in the degree to which they are enforced.
Folkways are mildly enforced social expectations, while mores are strictly held beliefs about behaviors.
Mores dictate right and wrong, while folkways distinguish between proper and rude behavior.