Once my friends and I tried to call a ghost at school. We four girls don’t take IT (information technology) so it was kind of a free period for us without a teacher. One of our mate suggested we call a ghost and we agreed. We sat in a circle, switched-off the lights and said JINN three times and then I said "if you are there then show us your presence" we waited for two or three minutes but nothing happened so we switched on the lights and started talking about ghost and stuff like that. Suddenly a terrifying sound came from behind one of my friends. It sounded so much like a scream or something cracks whatever it was it sounded dreadful. We all screamed at that moment with horror and ran towards the door. We were so petrified that we really wanted to go to the bathroom but we don’t so we came back inside. Sat down and tried to relax. We first thought it must be our illusion or something but I said that we all heard the voice and it was not an illusion and we could feel someone else present there. So after that scary encounter we never ever tried to do any stupid thing again.