late at night

As you all know, there is such thing as the 13th... well i spent the night at my cousins house. So its about 12:00 a.m and i went to get a drink in the kitchen.... Well as i went to the kitchen she said im going to the bathroom. I said okay because i actually thought she was going to the bathroom but in the mean time she hid behind the couch. i get my drink, finished it up and went to the living room. Then i notice that its PITCH BLACK so im calling out for her saying. "Are you done in the bathroom? Because i need your help getting around and you know the way around---" Pop! out of NOWHERE and scared the CRAP out of me... so i sqealed and put my hand over my mouth before i could truly scream! But dont worry i got back at her..... but thats another story.