Back in the mid-60's, there was a movie, "What Did You Do in the War, Daddy?" Speaking of hand gestures it was a ROFLMbO.
Of course, that was before 'hand gestures' were free, tattoos and body piercings, etc. People even got married way back before the 'days of enlightenment'. Kids ran with scissors and drank from the garden hose back then, too.