This happened to me when I was still at primary school.
I was babysitting my little brother while our parents were out. We were bored so we decided to play hide-and-seek.
I became "it" and started looking for my brother. I entered my parent's bedroom and opened a wardrobe which was crammed full of clothes. I then thrust my hand into it when immediately another hand reached out from inside and gripped mine.
I tried to pull him out shouting, " Hey, come out!" But he wouldn't come out no matter how hard I pulled. He was hiding behind all the clothes and didn't speak a word either, and I started wondering what was wrong with him.
Just then a voice called out to me from behind: "what are you doing there?" It was my little brother standing in the doorway. I panicked and shook myself free of the grip and we rushed out of the house together.
Needless to say, I couldn't go inside again until my parents came home. What was that hand? Did it belong to a burglar, or......?