Rube Goldberg Day
Today is Rube Goldberg Day. On July 4, 1883, Reuben Garrett Lucius “Rube” Goldberg was born in San Francisco, CA. In his 87 years on the planet, he was a cartoonist, engineer, inventor, author, sculptor, and scriptwriter.
He is best known for his cartoons depicting absurdly complex contraptions used to perform simple tasks. One such device was an intricate system, triggered by the movement of a spoon, that would automatically mop one’s upper lip after taking a sip of soup, as seen in the following commemorative stamp.

“Self-Operating Napkin” US Stamp, 1995
As an engineer and inventor, Goldberg often brought these cartoons to life. In 1930, he wrote and made a cameo appearance in the film Soup to Nuts, which featured some of his innovative machines and starred the men who would later become known as the Three Stooges.
In 1948, Goldberg was awarded a Pulitzer Prize for his political cartoons. Few knew his work had aroused such anti-Semitic hatred during the war that he had insisted his sons change their surnames. They chose the last name George, and it has remained the family name ever since. Their children run a company called RGI (Rube Goldberg Incorporated) to honor their grandfather’s last name.

Goldberg was a founding member and the first president of the National Cartoonists Society, the namesake of its Reuben Award, given to the Cartoonist of the Year. He is the inspiration for various international competitions, known as Rube Goldberg Machine Contests, many of which are sponsored by his descendants through RGI.
He is also immortalized in the Merriam-Webster Dictionary:
Rube Goldberg
adjective Rube Gold·berg \ˈrüb-ˈgōl(d)-ˌbərg\
: accomplishing by complex means what seemingly could be done simply ; also : characterized by such complex means
Happy Rube Goldberg Day!

Magna Carta Day, 
The short answer is that it’s probably nonsense verse made popular (no pun intended) because children enjoyed shouting, “Pop!” It’s believed to have originated in the 1700s in England, but the first official version of the song wasn’t published there until the 1850s. Within a few years, it jumped the pond and appeared in Boston and New York newspapers.
June 9 is Donald Duck Day. It celebrates the date in 1934 when he first appeared in a Disney cartoon called “The Wise Little Hen.” His rise was meteoric. Only nine years later, in 1943, Donald won an Oscar for his role in a satire about Nazis, only to see the film shelved by Disney for the next 71 years.