Zombie Fingers

Troy [bursting into tears]: “Aaaaeeeeiiiii!”
Me: “Oh my gosh, what happened?!”
Troy: “I bit my finger!”
Me: “Ouch, I bet that hurt. Which one?”
Troy [pointing at his thumb]: “This one.”
Me: “Your thumb, huh? Yeah, I see it turning red. Looks like it might bleed. The bad news is that since you bit it, it’s going to turn into a zombie thumb.”
Troy [chuckling despite the pain]: “No, it’s not!”
Me: “Oh yeah it is. It’s going to start coming after you saying, ‘Braaaaaiiiiinnnnssss!’ You’ll be sleeping, and you’ll feel something crawling up your chest, and you’ll wake up to find it’s your thumb coming for you.”
Troy: “You’re so silly! You can’t just turn a thumb into a zombie, it would turn everything into a zombie!”
Me: “I’m not so sure. I’d keep an eye on your thumb for the next few days.”
Troy: “Dada!”
Me: “I’m serious.”