The Presidents Of The USA
A 7 year old was asked the meaning of Presidents Day.
Presidents Day is when President Obama steps out of the White House, and if he sees his shadow we have one more year of unemployment.
And the scientific community is united in that fact.
Actually, there is no official federal Presidents Day nor any such official state holiday in Iowa, it's Washington's Birthday.
Although, in Iowa, we do honor Lincoln's Birthday as a state holiday, it (along with Washington's Birthday) is not a paid day off for state employees.