A childhood belief about ghosts

Once, I was at a sleepover and it was real late at night. A few of my friends decided to do "Bloody Mary" so we waited until twelve to do it. So my friend that was having the sleepover went and got a candle and the five of us piled into her bathroom. We all already had closed our eyes and started to spin around as say "bloody mary" three times. After the third time we opened our eyes and we saw red glowing eyes in the mirror and what looked like a lady with long black hair in the mirror. We ran out of the bathroom screaming our heads off. Later we found out that her brother had overheard us talking about doing bloody mary and he went a nd got this motion light thing he had, a manican head thing, and a long black wig. What he had did was he set up the motion light to turn on when we walked into the bathroom and he had put the wig on the head. we were so mad at him and we didn't sleep for the rest of the night. he did that when we were twelve but we were still so scared.