you were walking to the convenience store all by yourself while humming a happy tune. After a few seconds you heard footsteps from behind following you but you chose to ignore it. You entered the store, picked what you needed to buy then went to the counter.

then suddenly you felt a pair of eyes staring at you. You turned around and saw a woman wearing a black mask staring directly at your eyes. The two of you locked eyes for a moment before you both looked away at the same time. Huh, weird