What was George Washington's middle name?

Trick question. The first president of the United States to have a middle name was John Quincy Adams. He was the sixth decider-in-chief. He was elected in the disputed election of 1824 (over two-namer, Andrew Jackson), and he served from 1825-1829.

During the nineteenth century, presidents with middle names were the exceptions rather than the rule:

William Henry Harrison

James Knox Polk

Hiram Ulysses Grant, who, according to legend, changed his name to Ulysses Simpson Grant upon entering West Point because he preferred the sound of U.S. Grant to the initials H.U.G.

Rutherford Birchard Hayes

James Abram Garfield

Chester Alan Arthur

Stephen Grover Cleveland dropped his first name and subsequently went on to fame and political fortune with the trimmer handle.

For the most part, twentieth century presidents were rich with middle names.

Technically, Teddy Roosevelt was the sole exception, although, like Cleveland, Thomas Woodrow Wilson and John Calvin Coolidge dropped their assigned first names when they hit adulthood.

Franklin Delano Roosevelt (FDR) was the president who made it all matter. Then JFK and LBJ.

Jimmy Carter tried to forget his middle name was Earl. Bill Clinton seemed to revel in his middle name: Jefferson. Opponents of George Bush-41 attempted to make hay out of his four-banger, upper-crust-sounding family name: George Herbert Walker Bush. His son, Bush-43, has been called simply "W." by many, as a shorthand distinction between him and his father, as well as a low-grade measure of disrespect.

Is it "the ultimate fear bomb" to call Barack Hussein Obama by his full name?

Presumably, the unfortunate moniker was given to him with the best of intentions by his parents who loved him and wanted the best for him.

Sometimes names turn out to be unforeseen obstacles or annoyances.

A Personal Aside: my parents affixed me with a perfectly sophisticated, cultured, and fairly uncommon given-name back in 1964 (Ashley). During the 1980s, my first name became popular as a feminine given-name. I wish I had a dollar for every early-twenty-something who has asked me over the last fifteen years: "how come you got a girl's name?"

But it's my name. I am who I am.

My advice to BHO: Deal with it.