Leap Years were first introduced over 2000 years ago with the transition from the Roman Calendar to the Julian Calendar in 45 BCE and has been associated with age-old Leap Day traditions and folklore ever since.
One of the most famous traditions being the woman's "privilege" of proposing marriage to men instead of the other way around. This one goes back almost four centuries and apparently any man who refused such a proposal owed his spurned suitor a silk gown and a kiss — provided she was wearing a red petticoat at the moment she popped the question. Where to these things come from?!? Love it!
Fast forward 400 years to last Thursday's 30 Rock and now you can celebrate Leap Day with some new folklore. Happy Leap Day, Leap Day William!