Day or night

I recently saw a trend on social media where people present themselves as they are during the day, but at night they "steal chickens." Many don't understand the essence of the trend, but basically it suggests that you're someone who presents yourself to society by all the necessary rules to fit in, but at night you're free to live your second side without fear of what others will say, or to show something more than you usually do. At least, that's what I interpret the trend to mean.