Internet

Tim Berners-Lee, the father of the Internet, apologized for adding "//" to "http://". He said "http:" alone would have sufficed, but he added the slashes because "it looked cool at the time."

Searching '241543903' brings up photos of people with their heads in refrigerators. In 2009, American artist David Horvitz created this number by combining his fridge's serial number with barcodes of food inside it, sparking an internet meme that spread worldwide from Brazil.

The term 'spam mail' comes from Monty Python's comedy sketch 'Spam.' During World War II, the US supplied massive amounts of SPAM cans to Britain, and the Brits' frustration inspired the sketch. The name later stuck to annoying promotional emails.