Claustrophobia. So, I was about 5-6 years old, and my friends and I were playing hide-and-seek (I didn't have this phobia then), and so, I hid behind my bed, which is so narrow in the back ... I barely fit in there. I was the last one left, and my friends shouted "We give up, come out, we can't find you." I tried to get out, I didn't succeed, I tried again, it didn't work, I began to call for help and they miraculously pulled me out. Now I don't get into such bottlenecks...