paranormal things do occurred....

we were actually tried to learn some new topic on economy.but then,someone starting to talk about ghostly stuff.at first,someone from our group deny to talk about it and telling us to continue what we studies..but you know..some of us were quite a brickhead.then we continue with the story..while we continue i already starting to feel the goosebump.but then,one of my friend start turn on the some kinda scary-terrible music..by listening to the lyrics the creepiness is getting intense..then a friend of mine ask a girl beside her "hey,did you just sing?" the girl answered "no,i never sing" the atmosphere getting mixture with creepiness..then,someone calling me to look at the fans..i look into the fan..there`s nothing wrong with it..but the fan spinning were getting slower..my friend said"it was fast before i called you" then what makes me scare is..the switch was not even been turned on!! what was actually happened!!!!