Now THAT's a Knife: Washington Cuts His Cake

George Washington was born 280 years ago on Feb. 21, 1732. Tuesday's visitors at Valley Forge National Historical Park marked the day with "George and Martha" Washington.

The celebration featured an authentic 18th century birthday cake recipe ("minus the brandy") and a rousing rendition of "Happy Birthday" sung by the crowd of well-wishers.

Click on the video to see the amazing blade General Washington, who famously wintered at Valley Forge during the Revolutionary War, used to cut his cake.