One day I was at home listening to music when suddenly I felt a pain in my neck. As I tried to turn my head, I head my neck crack. I got the fright of my life. I was so scared that I could feel my legs trembling.
"What's the matter with me?" I thought to myself.
Just then, I felt myself slapped by someone. I opened my eye and saw my teacher standing over me with an angry look in his face. I realized then that I had been dreaming. I didn't mind getting caught dozing off in class. I was happy what happened was just a dream.

I don't believe Tim, he always exaggerates everything.
dream of/about  sb/sth/V-ing    不说: dream sb/...
be at home in sth 对...精通，与家无关
be lost in sth 一窍不通
doze off 打瞌睡