Gonggggg!
I made a “fort” on the ground out of pillows and blankets for myself and my younger cousin. I used some heavy textbooks and some 5-10 pound weights from my dad’s personal gym to pin a sheet above us (give it a tent-like ambience).
In the middle of the night, my younger cousin started to move in his sleep (I assume) and the weight slipped and bonked him on the head. It sounded like hitting a gong underwater. Story credit: Reddit / TwoFacedTomcat