If you’re having a bad day, prepare to turn your frown upside down. I’m not sure if these 18 babies saw a ghost, dad making funny faces, or something else totally unexpected, but either way, their surprised reactions are hilarious!

Whether or not you’re a baby person, you can’t deny that it’s fun to watch tiny humans learn about the world. For being so small, they’re awfully resilient! They cry about the oddest things, fall when they are learning to walk, and sometimes get so surprised that they nearly jump out of their diapers. Through it all, though, they keep right on going.

1. When you’re a newborn, the whole world is full of surprises.

2. Then you get to know your family and start to wonder, “Who the hell are these weirdos?”

Read More: 20 Parents Who Have The Best Sense Of Humor Ever

3. But you know what they say — if you can’t beat them, join them!