This baby has the most hilarious reaction to hearing his grandpa roar

With Halloween right around the corner, 'tis the season to get spooked by scary movies and creepy haunted houses.

But the one place you should feel completely safe is in the comfort of your own home, surrounded by your loving family.

Unfortunately, baby Jack doesn't have the luxury.

In an adorable seven-second video that's racking up views on YouTube, Jack's mom calls for him to come over. As the wobbly tot comes running down the hallway toward the sound of his mom's voice, you can't help but want to warn him of what lies ahead. As he careens around the corner, his mean ol' grandpa lets out a giant lion's roar — and Jack has the most hilarious reaction.

Surprised Jack bolts out of the room like his life depends on it, all the while thinking, "Nope, nope, nope, nope aaaaand NOPE." (Or at least, we imagine he's thinking that.)

Here is the video.