When you decide to actually make your own food for once:
When you have big news and someone starts talking about their boring day:
When they bring in your birthday cake:
When a randomly gross picture shows up in your Google image search:
When you’re in a crowded parking lot and someone leaves right when you show up:
When someone you don’t like asks you out:
When you’re singing a song and some random person decides to join you:
When some a-hole walks in wearing the same shirt as you:
When you see a puppy:
When your phone breaks:
When you see someone wearing socks with sandals:
When you’re picked first to do something:
When you’re on Facebook and your comment gets more likes than the status:
When you changed your answer on a test only to find out the first answer was right:
When you look at the clock during school or work:
When you were little and fought with your parents:
When you’re single and a couple is being all cute and adorable next to you:
most of these come from here, here and here. I came up with a few on my own.