Just three months after John F. Kennedy was gunned down by an assassin, the Beatles landed at New York's JFK Airport. America was ready to feel joyful again, and people lost their freaking minds over these four guys from England. Girls literally pissed their pants when they caught a glimpse of their car driving down the street, and some even ate the grass they walked on. It was level of teenage mania the country had never before seen – even at the height of Elvis Presley. Girls screamed so loud at their concerts that nobody could even hear the music. During the initial wave of Beatlemania in 1964 few people could have predicted the groundbreaking music the band would release as the decade went on. Unlike many other teen sensations, this was a group that truly deserved the screams, cries and soiled pants.