Follow these simple steps to create your Creepy Deviled Eyeballs:

1. Boil the Eggs: Place the eggs in a saucepan and cover with water. Bring to a boil, then reduce the heat to low and simmer for 10-12 minutes.

2. Cool the Eggs: Remove the saucepan from heat. Let the eggs sit for a minute, then transfer them to a bowl of ice water to cool for 10 minutes.

3. Peel the Eggs: Carefully peel the cooled eggs under running water to avoid any cracks.

4. Slice the Eggs: Cut each egg in half lengthwise. Gently scoop out the yolks and place them in a medium bowl.

5. Make the Filling: To the yolks, add mayonnaise, Dijon mustard, vinegar, salt, and pepper. Mix until smooth.

6. Add Color: Divide the yolk mixture into two bowls. Leave one bowl plain and add a few drops of green food coloring to the other bowl, mixing until well-combined.

7. Fill the Egg Whites: Using a piping bag or a spoon, fill the egg whites with the green yolk mixture.

8. Add Eyeballs: Carefully place a slice of black olive on top of each filled egg to mimic the pupil of an eye.

9. Garnish (Optional): If you want to add extra creepy vibes, use a toothpick to drizzle a bit of red food coloring around the edges of the filling, resembling veins.

10. Chill and Serve: Refrigerate the eggs until ready to serve, allowing the flavors to meld.

Now, your Creepy Deviled Eyeballs are ready to amaze and delight your guests!