This gif can be used in so many different contexts:

• “Wait, did I remember to lock the door?”
• Seeing a someone you know from school while shopping
• “Shit, going the wrong way”
• That mini-heart attack when you don’t feel your phone in your pocket
• Period leak
• Going to bed and remembering you have homework due the next day
• Sudden onset of diarrhea 
• Walking down the school hallway and hearing someone insult you 
• You notice a stranger following you
• When you realize the meaning of life.