This year we're going to see 4 uncommon dates: 1/1/11, 1/11/11, 11/1/11 and 11/11/11. Now there's more: Take the last 2 digits of the year you were born in and add to the age you're gonna be this year. The result will be 111 for everyone.
Long time ago in England, a couple could not have a sex without a written permission from the king (Except if she/he was a member of the royal family). So if someone wanted to have babies, they will go to the king to ask for a written permission. The king then gave a kind of pass card that must be hung on the bedroom door when they had a sex. The card read “F.U.C.K.” (Fornification Under Consent of the King).