Since the party was taking place during Halloween which was the month for all kinds of horror, you decided to choose one of the costumes from the monster area that would make people believe you were actually scary. As you look in the horror section, you spotted that there were a ton of monster costumes.
However, you saw that one of the costume sets that you took a look at on the wall, was off of the hanger which meant that it was the type of costume Mark was going to try on before heading to the college party. You had no idea which costume Mark was going to wear, but at the same time you didn't know what you were going to wear either as you stood there looking. If you didn't choose a Halloween costume soon, the store would close. Luckily, you hear Mark come out of the dressing room.