If you've been on FB for a while then you might have seen a meme that showed carving a face into an avocado pit and a few minutes later you have scary, bleeding faces. Well, I've seen it a few times and I just had to try it for my self.
What to do:
Remove seed from avocado
Carefully peel away brown part from seed
Carve a face into seed
Wait 10 minutes and watch as face starts to 'bleed'.
I found that making more shallow cute instead of deeper cuts will make it bleed more and look redder. This would be fun to do for Halloween. Nothing says I love Halloween like a shelf full of bleeding faces.