The weirdest one I had was when I was watching anime all morning in bed and I got up and suddenly started feeling weird. I was walking out of my room when I fell down and hit my elbow on something and got a bruise. I kept walking and I saw everything going dark. I couldn't think very well, and I was walking around my house looking for my mom. I started randomly tapping the wall (I have no idea why, couldn't think) and than I just lied on the ground and it went away a few minutes later. A similar thing happened on an airplane when I played Nintendo too much and felt dizzy and everything was going dark. It was weird.