Camping

Thekeezler and his friend were on a road trip through California when they found a relatively empty campsite. They set up camp, made dinner, and went to bed.
In the middle of the night, they were awoken by someone whistling outside their tent to the tune of  '' when the saints come Marching in''. They laid in utter silence , hoping the singing person would go away. But then the whistling turned to chanting '' when you sleep
here, you disrespect me, you disrespect the U.S Marines.'' The Reddit
user knew they needed to get out.
They quietly climbed from their tent into their truck and drove to a motel in the neighboring town. The next morning they drove back to the campsite to retrieve the belongings they'd left behind. As they were leaving, they paused at a site adjacent to where they had slept, where a family had been staying. The family told thekeezler that the singing had continued for another 2-3 hours after they'd left, and it was one of the creepiest thing they'd ever experienced.