In February 1974, England was battling France in a crucial rugby match at Twickenham Stadium in London. Over 53,000 fans were at the game, including many British royals, and all of them were treated to a healthy dose of flopping genitals. 25-year-old Australian Michael O'Brien had just taken a bet from a friend to run across the field naked and became the first known streaker at a sporting event.
The crowd all looks like they've seen better.
Up to that point, streaking was relegated to college courtyards, but no one had considered running naked in front of thousands of spectators, some of whom would no doubt have cameras. The police chasing him were baffled as to why anyone would willingly do it and were just as amused as the audience.
In fact, after assessing a fine, they actually let O'Brien go right back to his seat for the second half of the match. During his moment of arrest, however, one policeman had the decency to cover up the offensive bits with his hat, which immediately became an iconic photo worldwide.
The policeman would immediately file paperwork for a new hat.