I know that there is a spoken rule about not wearing white before Easter, which for some reason has a hold on me. I don't know why but I really do follow this rule (for the record, I don't really think this rule applies anymore.) Another rule I always follow: wait at least 15 minutes after eating before swimming. I am absolutely terrified of what would happen if I did not wait. I'm pretty sure chocking on your own vomit and then drowning is what happens, but I'll never know because I follow the rules.
However I do feel a bit like a rebel in the fact that I still have two days before it's Easter and look at me -- I'm wearing white pants and open toed shoes. Rebel without a cause, I tell ya.