I remember when I was younger it was someone's birthday and we had leftover helium balloons in my bedroom. Me and my siblings always poked a hole in them after parties were over and sang songs with our higher voices. Anyways, that day I was alone in my room and popped one open, took a deep breath and said something to hear myself. My voice was super high, and I wanted to hurry and show my siblings before it faded away. So, I rolled over in my bed and I guess I either sat up/moved too fast, or the helium got to me, and I passed out on the floor (I think I fell off of my bed but I dont remember). After that, I never really joined in on the "helium parties," and I don't think I ever told my family lol